diff --git a/proto/api/v1/instance_service.proto b/proto/api/v1/instance_service.proto
index fb92b96ce..aa3cdd7a2 100644
--- a/proto/api/v1/instance_service.proto
+++ b/proto/api/v1/instance_service.proto
@@ -9,6 +9,7 @@ import "google/api/field_behavior.proto";
 import "google/api/resource.proto";
 import "google/protobuf/empty.proto";
 import "google/protobuf/field_mask.proto";
+import "google/protobuf/timestamp.proto";
 import "google/type/color.proto";
 
 option go_package = "gen/api/v1";
@@ -41,6 +42,11 @@ service InstanceService {
       body: "*"
     };
   }
+
+  // GetInstanceStats returns resource usage statistics for the instance. Admin only.
+  rpc GetInstanceStats(GetInstanceStatsRequest) returns (InstanceStats) {
+    option (google.api.http) = {get: "/api/v1/instance/stats"};
+  }
 }
 
 // Instance profile message containing basic instance information.
@@ -272,3 +278,23 @@ message TestInstanceEmailSettingRequest {
   // Optional. Recipient email address. If omitted, the current user's email address is used.
   string recipient_email = 2 [(google.api.field_behavior) = OPTIONAL];
 }
+
+// Request message for GetInstanceStats.
+message GetInstanceStatsRequest {}
+
+// Resource usage statistics for the instance.
+message InstanceStats {
+  DatabaseStats database = 1;
+  // Recursive size of the data directory in bytes. -1 if unavailable.
+  int64 local_storage_bytes = 2;
+  // Server-side timestamp when the snapshot was generated.
+  google.protobuf.Timestamp generated_time = 4;
+
+  // Database size statistics.
+  message DatabaseStats {
+    // driver is one of "sqlite", "mysql", "postgres".
+    string driver = 1;
+    // size_bytes is the database size in bytes; -1 if unavailable.
+    int64 size_bytes = 2;
+  }
+}
diff --git a/proto/gen/api/v1/apiv1connect/instance_service.connect.go b/proto/gen/api/v1/apiv1connect/instance_service.connect.go
index 0376c2c55..5cf6835ab 100644
--- a/proto/gen/api/v1/apiv1connect/instance_service.connect.go
+++ b/proto/gen/api/v1/apiv1connect/instance_service.connect.go
@@ -46,6 +46,9 @@ const (
 	// InstanceServiceTestInstanceEmailSettingProcedure is the fully-qualified name of the
 	// InstanceService's TestInstanceEmailSetting RPC.
 	InstanceServiceTestInstanceEmailSettingProcedure = "/memos.api.v1.InstanceService/TestInstanceEmailSetting"
+	// InstanceServiceGetInstanceStatsProcedure is the fully-qualified name of the InstanceService's
+	// GetInstanceStats RPC.
+	InstanceServiceGetInstanceStatsProcedure = "/memos.api.v1.InstanceService/GetInstanceStats"
 )
 
 // InstanceServiceClient is a client for the memos.api.v1.InstanceService service.
@@ -58,6 +61,8 @@ type InstanceServiceClient interface {
 	UpdateInstanceSetting(context.Context, *connect.Request[v1.UpdateInstanceSettingRequest]) (*connect.Response[v1.InstanceSetting], error)
 	// Tests notification email delivery with the provided or stored SMTP settings.
 	TestInstanceEmailSetting(context.Context, *connect.Request[v1.TestInstanceEmailSettingRequest]) (*connect.Response[emptypb.Empty], error)
+	// GetInstanceStats returns resource usage statistics for the instance. Admin only.
+	GetInstanceStats(context.Context, *connect.Request[v1.GetInstanceStatsRequest]) (*connect.Response[v1.InstanceStats], error)
 }
 
 // NewInstanceServiceClient constructs a client for the memos.api.v1.InstanceService service. By
@@ -95,6 +100,12 @@ func NewInstanceServiceClient(httpClient connect.HTTPClient, baseURL string, opt
 			connect.WithSchema(instanceServiceMethods.ByName("TestInstanceEmailSetting")),
 			connect.WithClientOptions(opts...),
 		),
+		getInstanceStats: connect.NewClient[v1.GetInstanceStatsRequest, v1.InstanceStats](
+			httpClient,
+			baseURL+InstanceServiceGetInstanceStatsProcedure,
+			connect.WithSchema(instanceServiceMethods.ByName("GetInstanceStats")),
+			connect.WithClientOptions(opts...),
+		),
 	}
 }
 
@@ -104,6 +115,7 @@ type instanceServiceClient struct {
 	getInstanceSetting       *connect.Client[v1.GetInstanceSettingRequest, v1.InstanceSetting]
 	updateInstanceSetting    *connect.Client[v1.UpdateInstanceSettingRequest, v1.InstanceSetting]
 	testInstanceEmailSetting *connect.Client[v1.TestInstanceEmailSettingRequest, emptypb.Empty]
+	getInstanceStats         *connect.Client[v1.GetInstanceStatsRequest, v1.InstanceStats]
 }
 
 // GetInstanceProfile calls memos.api.v1.InstanceService.GetInstanceProfile.
@@ -126,6 +138,11 @@ func (c *instanceServiceClient) TestInstanceEmailSetting(ctx context.Context, re
 	return c.testInstanceEmailSetting.CallUnary(ctx, req)
 }
 
+// GetInstanceStats calls memos.api.v1.InstanceService.GetInstanceStats.
+func (c *instanceServiceClient) GetInstanceStats(ctx context.Context, req *connect.Request[v1.GetInstanceStatsRequest]) (*connect.Response[v1.InstanceStats], error) {
+	return c.getInstanceStats.CallUnary(ctx, req)
+}
+
 // InstanceServiceHandler is an implementation of the memos.api.v1.InstanceService service.
 type InstanceServiceHandler interface {
 	// Gets the instance profile.
@@ -136,6 +153,8 @@ type InstanceServiceHandler interface {
 	UpdateInstanceSetting(context.Context, *connect.Request[v1.UpdateInstanceSettingRequest]) (*connect.Response[v1.InstanceSetting], error)
 	// Tests notification email delivery with the provided or stored SMTP settings.
 	TestInstanceEmailSetting(context.Context, *connect.Request[v1.TestInstanceEmailSettingRequest]) (*connect.Response[emptypb.Empty], error)
+	// GetInstanceStats returns resource usage statistics for the instance. Admin only.
+	GetInstanceStats(context.Context, *connect.Request[v1.GetInstanceStatsRequest]) (*connect.Response[v1.InstanceStats], error)
 }
 
 // NewInstanceServiceHandler builds an HTTP handler from the service implementation. It returns the
@@ -169,6 +188,12 @@ func NewInstanceServiceHandler(svc InstanceServiceHandler, opts ...connect.Handl
 		connect.WithSchema(instanceServiceMethods.ByName("TestInstanceEmailSetting")),
 		connect.WithHandlerOptions(opts...),
 	)
+	instanceServiceGetInstanceStatsHandler := connect.NewUnaryHandler(
+		InstanceServiceGetInstanceStatsProcedure,
+		svc.GetInstanceStats,
+		connect.WithSchema(instanceServiceMethods.ByName("GetInstanceStats")),
+		connect.WithHandlerOptions(opts...),
+	)
 	return "/memos.api.v1.InstanceService/", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		switch r.URL.Path {
 		case InstanceServiceGetInstanceProfileProcedure:
@@ -179,6 +204,8 @@ func NewInstanceServiceHandler(svc InstanceServiceHandler, opts ...connect.Handl
 			instanceServiceUpdateInstanceSettingHandler.ServeHTTP(w, r)
 		case InstanceServiceTestInstanceEmailSettingProcedure:
 			instanceServiceTestInstanceEmailSettingHandler.ServeHTTP(w, r)
+		case InstanceServiceGetInstanceStatsProcedure:
+			instanceServiceGetInstanceStatsHandler.ServeHTTP(w, r)
 		default:
 			http.NotFound(w, r)
 		}
@@ -203,3 +230,7 @@ func (UnimplementedInstanceServiceHandler) UpdateInstanceSetting(context.Context
 func (UnimplementedInstanceServiceHandler) TestInstanceEmailSetting(context.Context, *connect.Request[v1.TestInstanceEmailSettingRequest]) (*connect.Response[emptypb.Empty], error) {
 	return nil, connect.NewError(connect.CodeUnimplemented, errors.New("memos.api.v1.InstanceService.TestInstanceEmailSetting is not implemented"))
 }
+
+func (UnimplementedInstanceServiceHandler) GetInstanceStats(context.Context, *connect.Request[v1.GetInstanceStatsRequest]) (*connect.Response[v1.InstanceStats], error) {
+	return nil, connect.NewError(connect.CodeUnimplemented, errors.New("memos.api.v1.InstanceService.GetInstanceStats is not implemented"))
+}
diff --git a/proto/gen/api/v1/instance_service.pb.go b/proto/gen/api/v1/instance_service.pb.go
index 9fef356a9..593ae148b 100644
--- a/proto/gen/api/v1/instance_service.pb.go
+++ b/proto/gen/api/v1/instance_service.pb.go
@@ -13,6 +13,7 @@ import (
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	emptypb "google.golang.org/protobuf/types/known/emptypb"
 	fieldmaskpb "google.golang.org/protobuf/types/known/fieldmaskpb"
+	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
 	reflect "reflect"
 	sync "sync"
 	unsafe "unsafe"
@@ -633,6 +634,106 @@ func (x *TestInstanceEmailSettingRequest) GetRecipientEmail() string {
 	return ""
 }
 
+// Request message for GetInstanceStats.
+type GetInstanceStatsRequest struct {
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *GetInstanceStatsRequest) Reset() {
+	*x = GetInstanceStatsRequest{}
+	mi := &file_api_v1_instance_service_proto_msgTypes[6]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *GetInstanceStatsRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetInstanceStatsRequest) ProtoMessage() {}
+
+func (x *GetInstanceStatsRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_api_v1_instance_service_proto_msgTypes[6]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetInstanceStatsRequest.ProtoReflect.Descriptor instead.
+func (*GetInstanceStatsRequest) Descriptor() ([]byte, []int) {
+	return file_api_v1_instance_service_proto_rawDescGZIP(), []int{6}
+}
+
+// Resource usage statistics for the instance.
+type InstanceStats struct {
+	state    protoimpl.MessageState       `protogen:"open.v1"`
+	Database *InstanceStats_DatabaseStats `protobuf:"bytes,1,opt,name=database,proto3" json:"database,omitempty"`
+	// Recursive size of the data directory in bytes. -1 if unavailable.
+	LocalStorageBytes int64 `protobuf:"varint,2,opt,name=local_storage_bytes,json=localStorageBytes,proto3" json:"local_storage_bytes,omitempty"`
+	// Server-side timestamp when the snapshot was generated.
+	GeneratedTime *timestamppb.Timestamp `protobuf:"bytes,4,opt,name=generated_time,json=generatedTime,proto3" json:"generated_time,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *InstanceStats) Reset() {
+	*x = InstanceStats{}
+	mi := &file_api_v1_instance_service_proto_msgTypes[7]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *InstanceStats) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*InstanceStats) ProtoMessage() {}
+
+func (x *InstanceStats) ProtoReflect() protoreflect.Message {
+	mi := &file_api_v1_instance_service_proto_msgTypes[7]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use InstanceStats.ProtoReflect.Descriptor instead.
+func (*InstanceStats) Descriptor() ([]byte, []int) {
+	return file_api_v1_instance_service_proto_rawDescGZIP(), []int{7}
+}
+
+func (x *InstanceStats) GetDatabase() *InstanceStats_DatabaseStats {
+	if x != nil {
+		return x.Database
+	}
+	return nil
+}
+
+func (x *InstanceStats) GetLocalStorageBytes() int64 {
+	if x != nil {
+		return x.LocalStorageBytes
+	}
+	return 0
+}
+
+func (x *InstanceStats) GetGeneratedTime() *timestamppb.Timestamp {
+	if x != nil {
+		return x.GeneratedTime
+	}
+	return nil
+}
+
 // General instance settings configuration.
 type InstanceSetting_GeneralSetting struct {
 	state protoimpl.MessageState `protogen:"open.v1"`
@@ -660,7 +761,7 @@ type InstanceSetting_GeneralSetting struct {
 
 func (x *InstanceSetting_GeneralSetting) Reset() {
 	*x = InstanceSetting_GeneralSetting{}
-	mi := &file_api_v1_instance_service_proto_msgTypes[6]
+	mi := &file_api_v1_instance_service_proto_msgTypes[8]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -672,7 +773,7 @@ func (x *InstanceSetting_GeneralSetting) String() string {
 func (*InstanceSetting_GeneralSetting) ProtoMessage() {}
 
 func (x *InstanceSetting_GeneralSetting) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_instance_service_proto_msgTypes[6]
+	mi := &file_api_v1_instance_service_proto_msgTypes[8]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -762,7 +863,7 @@ type InstanceSetting_StorageSetting struct {
 
 func (x *InstanceSetting_StorageSetting) Reset() {
 	*x = InstanceSetting_StorageSetting{}
-	mi := &file_api_v1_instance_service_proto_msgTypes[7]
+	mi := &file_api_v1_instance_service_proto_msgTypes[9]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -774,7 +875,7 @@ func (x *InstanceSetting_StorageSetting) String() string {
 func (*InstanceSetting_StorageSetting) ProtoMessage() {}
 
 func (x *InstanceSetting_StorageSetting) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_instance_service_proto_msgTypes[7]
+	mi := &file_api_v1_instance_service_proto_msgTypes[9]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -833,7 +934,7 @@ type InstanceSetting_MemoRelatedSetting struct {
 
 func (x *InstanceSetting_MemoRelatedSetting) Reset() {
 	*x = InstanceSetting_MemoRelatedSetting{}
-	mi := &file_api_v1_instance_service_proto_msgTypes[8]
+	mi := &file_api_v1_instance_service_proto_msgTypes[10]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -845,7 +946,7 @@ func (x *InstanceSetting_MemoRelatedSetting) String() string {
 func (*InstanceSetting_MemoRelatedSetting) ProtoMessage() {}
 
 func (x *InstanceSetting_MemoRelatedSetting) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_instance_service_proto_msgTypes[8]
+	mi := &file_api_v1_instance_service_proto_msgTypes[10]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -896,7 +997,7 @@ type InstanceSetting_TagMetadata struct {
 
 func (x *InstanceSetting_TagMetadata) Reset() {
 	*x = InstanceSetting_TagMetadata{}
-	mi := &file_api_v1_instance_service_proto_msgTypes[9]
+	mi := &file_api_v1_instance_service_proto_msgTypes[11]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -908,7 +1009,7 @@ func (x *InstanceSetting_TagMetadata) String() string {
 func (*InstanceSetting_TagMetadata) ProtoMessage() {}
 
 func (x *InstanceSetting_TagMetadata) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_instance_service_proto_msgTypes[9]
+	mi := &file_api_v1_instance_service_proto_msgTypes[11]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -952,7 +1053,7 @@ type InstanceSetting_TagsSetting struct {
 
 func (x *InstanceSetting_TagsSetting) Reset() {
 	*x = InstanceSetting_TagsSetting{}
-	mi := &file_api_v1_instance_service_proto_msgTypes[10]
+	mi := &file_api_v1_instance_service_proto_msgTypes[12]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -964,7 +1065,7 @@ func (x *InstanceSetting_TagsSetting) String() string {
 func (*InstanceSetting_TagsSetting) ProtoMessage() {}
 
 func (x *InstanceSetting_TagsSetting) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_instance_service_proto_msgTypes[10]
+	mi := &file_api_v1_instance_service_proto_msgTypes[12]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -997,7 +1098,7 @@ type InstanceSetting_NotificationSetting struct {
 
 func (x *InstanceSetting_NotificationSetting) Reset() {
 	*x = InstanceSetting_NotificationSetting{}
-	mi := &file_api_v1_instance_service_proto_msgTypes[11]
+	mi := &file_api_v1_instance_service_proto_msgTypes[13]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1009,7 +1110,7 @@ func (x *InstanceSetting_NotificationSetting) String() string {
 func (*InstanceSetting_NotificationSetting) ProtoMessage() {}
 
 func (x *InstanceSetting_NotificationSetting) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_instance_service_proto_msgTypes[11]
+	mi := &file_api_v1_instance_service_proto_msgTypes[13]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1043,7 +1144,7 @@ type InstanceSetting_AISetting struct {
 
 func (x *InstanceSetting_AISetting) Reset() {
 	*x = InstanceSetting_AISetting{}
-	mi := &file_api_v1_instance_service_proto_msgTypes[12]
+	mi := &file_api_v1_instance_service_proto_msgTypes[14]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1055,7 +1156,7 @@ func (x *InstanceSetting_AISetting) String() string {
 func (*InstanceSetting_AISetting) ProtoMessage() {}
 
 func (x *InstanceSetting_AISetting) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_instance_service_proto_msgTypes[12]
+	mi := &file_api_v1_instance_service_proto_msgTypes[14]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1097,7 +1198,7 @@ type InstanceSetting_AIProviderConfig struct {
 
 func (x *InstanceSetting_AIProviderConfig) Reset() {
 	*x = InstanceSetting_AIProviderConfig{}
-	mi := &file_api_v1_instance_service_proto_msgTypes[13]
+	mi := &file_api_v1_instance_service_proto_msgTypes[15]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1109,7 +1210,7 @@ func (x *InstanceSetting_AIProviderConfig) String() string {
 func (*InstanceSetting_AIProviderConfig) ProtoMessage() {}
 
 func (x *InstanceSetting_AIProviderConfig) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_instance_service_proto_msgTypes[13]
+	mi := &file_api_v1_instance_service_proto_msgTypes[15]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1186,7 +1287,7 @@ type InstanceSetting_GeneralSetting_CustomProfile struct {
 
 func (x *InstanceSetting_GeneralSetting_CustomProfile) Reset() {
 	*x = InstanceSetting_GeneralSetting_CustomProfile{}
-	mi := &file_api_v1_instance_service_proto_msgTypes[14]
+	mi := &file_api_v1_instance_service_proto_msgTypes[16]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1198,7 +1299,7 @@ func (x *InstanceSetting_GeneralSetting_CustomProfile) String() string {
 func (*InstanceSetting_GeneralSetting_CustomProfile) ProtoMessage() {}
 
 func (x *InstanceSetting_GeneralSetting_CustomProfile) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_instance_service_proto_msgTypes[14]
+	mi := &file_api_v1_instance_service_proto_msgTypes[16]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1251,7 +1352,7 @@ type InstanceSetting_StorageSetting_S3Config struct {
 
 func (x *InstanceSetting_StorageSetting_S3Config) Reset() {
 	*x = InstanceSetting_StorageSetting_S3Config{}
-	mi := &file_api_v1_instance_service_proto_msgTypes[15]
+	mi := &file_api_v1_instance_service_proto_msgTypes[17]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1263,7 +1364,7 @@ func (x *InstanceSetting_StorageSetting_S3Config) String() string {
 func (*InstanceSetting_StorageSetting_S3Config) ProtoMessage() {}
 
 func (x *InstanceSetting_StorageSetting_S3Config) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_instance_service_proto_msgTypes[15]
+	mi := &file_api_v1_instance_service_proto_msgTypes[17]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1340,7 +1441,7 @@ type InstanceSetting_NotificationSetting_EmailSetting struct {
 
 func (x *InstanceSetting_NotificationSetting_EmailSetting) Reset() {
 	*x = InstanceSetting_NotificationSetting_EmailSetting{}
-	mi := &file_api_v1_instance_service_proto_msgTypes[17]
+	mi := &file_api_v1_instance_service_proto_msgTypes[19]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1352,7 +1453,7 @@ func (x *InstanceSetting_NotificationSetting_EmailSetting) String() string {
 func (*InstanceSetting_NotificationSetting_EmailSetting) ProtoMessage() {}
 
 func (x *InstanceSetting_NotificationSetting_EmailSetting) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_instance_service_proto_msgTypes[17]
+	mi := &file_api_v1_instance_service_proto_msgTypes[19]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1438,11 +1539,66 @@ func (x *InstanceSetting_NotificationSetting_EmailSetting) GetUseSsl() bool {
 	return false
 }
 
+// Database size statistics.
+type InstanceStats_DatabaseStats struct {
+	state protoimpl.MessageState `protogen:"open.v1"`
+	// driver is one of "sqlite", "mysql", "postgres".
+	Driver string `protobuf:"bytes,1,opt,name=driver,proto3" json:"driver,omitempty"`
+	// size_bytes is the database size in bytes; -1 if unavailable.
+	SizeBytes     int64 `protobuf:"varint,2,opt,name=size_bytes,json=sizeBytes,proto3" json:"size_bytes,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *InstanceStats_DatabaseStats) Reset() {
+	*x = InstanceStats_DatabaseStats{}
+	mi := &file_api_v1_instance_service_proto_msgTypes[20]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *InstanceStats_DatabaseStats) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*InstanceStats_DatabaseStats) ProtoMessage() {}
+
+func (x *InstanceStats_DatabaseStats) ProtoReflect() protoreflect.Message {
+	mi := &file_api_v1_instance_service_proto_msgTypes[20]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use InstanceStats_DatabaseStats.ProtoReflect.Descriptor instead.
+func (*InstanceStats_DatabaseStats) Descriptor() ([]byte, []int) {
+	return file_api_v1_instance_service_proto_rawDescGZIP(), []int{7, 0}
+}
+
+func (x *InstanceStats_DatabaseStats) GetDriver() string {
+	if x != nil {
+		return x.Driver
+	}
+	return ""
+}
+
+func (x *InstanceStats_DatabaseStats) GetSizeBytes() int64 {
+	if x != nil {
+		return x.SizeBytes
+	}
+	return 0
+}
+
 var File_api_v1_instance_service_proto protoreflect.FileDescriptor
 
 const file_api_v1_instance_service_proto_rawDesc = "" +
 	"\n" +
-	"\x1dapi/v1/instance_service.proto\x12\fmemos.api.v1\x1a\x19api/v1/user_service.proto\x1a\x1cgoogle/api/annotations.proto\x1a\x17google/api/client.proto\x1a\x1fgoogle/api/field_behavior.proto\x1a\x19google/api/resource.proto\x1a\x1bgoogle/protobuf/empty.proto\x1a google/protobuf/field_mask.proto\x1a\x17google/type/color.proto\"\xa4\x01\n" +
+	"\x1dapi/v1/instance_service.proto\x12\fmemos.api.v1\x1a\x19api/v1/user_service.proto\x1a\x1cgoogle/api/annotations.proto\x1a\x17google/api/client.proto\x1a\x1fgoogle/api/field_behavior.proto\x1a\x19google/api/resource.proto\x1a\x1bgoogle/protobuf/empty.proto\x1a google/protobuf/field_mask.proto\x1a\x1fgoogle/protobuf/timestamp.proto\x1a\x17google/type/color.proto\"\xa4\x01\n" +
 	"\x0fInstanceProfile\x12\x18\n" +
 	"\aversion\x18\x02 \x01(\tR\aversion\x12\x12\n" +
 	"\x04demo\x18\x03 \x01(\bR\x04demo\x12!\n" +
@@ -1552,12 +1708,22 @@ const file_api_v1_instance_service_proto_rawDesc = "" +
 	"updateMask\"\xaa\x01\n" +
 	"\x1fTestInstanceEmailSettingRequest\x12Y\n" +
 	"\x05email\x18\x01 \x01(\v2>.memos.api.v1.InstanceSetting.NotificationSetting.EmailSettingB\x03\xe0A\x01R\x05email\x12,\n" +
-	"\x0frecipient_email\x18\x02 \x01(\tB\x03\xe0A\x01R\x0erecipientEmail2\xfc\x04\n" +
+	"\x0frecipient_email\x18\x02 \x01(\tB\x03\xe0A\x01R\x0erecipientEmail\"\x19\n" +
+	"\x17GetInstanceStatsRequest\"\x91\x02\n" +
+	"\rInstanceStats\x12E\n" +
+	"\bdatabase\x18\x01 \x01(\v2).memos.api.v1.InstanceStats.DatabaseStatsR\bdatabase\x12.\n" +
+	"\x13local_storage_bytes\x18\x02 \x01(\x03R\x11localStorageBytes\x12A\n" +
+	"\x0egenerated_time\x18\x04 \x01(\v2\x1a.google.protobuf.TimestampR\rgeneratedTime\x1aF\n" +
+	"\rDatabaseStats\x12\x16\n" +
+	"\x06driver\x18\x01 \x01(\tR\x06driver\x12\x1d\n" +
+	"\n" +
+	"size_bytes\x18\x02 \x01(\x03R\tsizeBytes2\xf4\x05\n" +
 	"\x0fInstanceService\x12~\n" +
 	"\x12GetInstanceProfile\x12'.memos.api.v1.GetInstanceProfileRequest\x1a\x1d.memos.api.v1.InstanceProfile\" \x82\xd3\xe4\x93\x02\x1a\x12\x18/api/v1/instance/profile\x12\x8f\x01\n" +
 	"\x12GetInstanceSetting\x12'.memos.api.v1.GetInstanceSettingRequest\x1a\x1d.memos.api.v1.InstanceSetting\"1\xdaA\x04name\x82\xd3\xe4\x93\x02$\x12\"/api/v1/{name=instance/settings/*}\x12\xb5\x01\n" +
 	"\x15UpdateInstanceSetting\x12*.memos.api.v1.UpdateInstanceSettingRequest\x1a\x1d.memos.api.v1.InstanceSetting\"Q\xdaA\x13setting,update_mask\x82\xd3\xe4\x93\x025:\asetting2*/api/v1/{setting.name=instance/settings/*}\x12\x9e\x01\n" +
-	"\x18TestInstanceEmailSetting\x12-.memos.api.v1.TestInstanceEmailSettingRequest\x1a\x16.google.protobuf.Empty\";\x82\xd3\xe4\x93\x025:\x01*\"0/api/v1/instance/settings/notification:testEmailB\xac\x01\n" +
+	"\x18TestInstanceEmailSetting\x12-.memos.api.v1.TestInstanceEmailSettingRequest\x1a\x16.google.protobuf.Empty\";\x82\xd3\xe4\x93\x025:\x01*\"0/api/v1/instance/settings/notification:testEmail\x12v\n" +
+	"\x10GetInstanceStats\x12%.memos.api.v1.GetInstanceStatsRequest\x1a\x1b.memos.api.v1.InstanceStats\"\x1e\x82\xd3\xe4\x93\x02\x18\x12\x16/api/v1/instance/statsB\xac\x01\n" +
 	"\x10com.memos.api.v1B\x14InstanceServiceProtoP\x01Z0github.com/usememos/memos/proto/gen/api/v1;apiv1\xa2\x02\x03MAX\xaa\x02\fMemos.Api.V1\xca\x02\fMemos\\Api\\V1\xe2\x02\x18Memos\\Api\\V1\\GPBMetadata\xea\x02\x0eMemos::Api::V1b\x06proto3"
 
 var (
@@ -1573,7 +1739,7 @@ func file_api_v1_instance_service_proto_rawDescGZIP() []byte {
 }
 
 var file_api_v1_instance_service_proto_enumTypes = make([]protoimpl.EnumInfo, 3)
-var file_api_v1_instance_service_proto_msgTypes = make([]protoimpl.MessageInfo, 18)
+var file_api_v1_instance_service_proto_msgTypes = make([]protoimpl.MessageInfo, 21)
 var file_api_v1_instance_service_proto_goTypes = []any{
 	(InstanceSetting_Key)(0),                             // 0: memos.api.v1.InstanceSetting.Key
 	(InstanceSetting_AIProviderType)(0),                  // 1: memos.api.v1.InstanceSetting.AIProviderType
@@ -1584,56 +1750,64 @@ var file_api_v1_instance_service_proto_goTypes = []any{
 	(*GetInstanceSettingRequest)(nil),                    // 6: memos.api.v1.GetInstanceSettingRequest
 	(*UpdateInstanceSettingRequest)(nil),                 // 7: memos.api.v1.UpdateInstanceSettingRequest
 	(*TestInstanceEmailSettingRequest)(nil),              // 8: memos.api.v1.TestInstanceEmailSettingRequest
-	(*InstanceSetting_GeneralSetting)(nil),               // 9: memos.api.v1.InstanceSetting.GeneralSetting
-	(*InstanceSetting_StorageSetting)(nil),               // 10: memos.api.v1.InstanceSetting.StorageSetting
-	(*InstanceSetting_MemoRelatedSetting)(nil),           // 11: memos.api.v1.InstanceSetting.MemoRelatedSetting
-	(*InstanceSetting_TagMetadata)(nil),                  // 12: memos.api.v1.InstanceSetting.TagMetadata
-	(*InstanceSetting_TagsSetting)(nil),                  // 13: memos.api.v1.InstanceSetting.TagsSetting
-	(*InstanceSetting_NotificationSetting)(nil),          // 14: memos.api.v1.InstanceSetting.NotificationSetting
-	(*InstanceSetting_AISetting)(nil),                    // 15: memos.api.v1.InstanceSetting.AISetting
-	(*InstanceSetting_AIProviderConfig)(nil),             // 16: memos.api.v1.InstanceSetting.AIProviderConfig
-	(*InstanceSetting_GeneralSetting_CustomProfile)(nil), // 17: memos.api.v1.InstanceSetting.GeneralSetting.CustomProfile
-	(*InstanceSetting_StorageSetting_S3Config)(nil),      // 18: memos.api.v1.InstanceSetting.StorageSetting.S3Config
-	nil, // 19: memos.api.v1.InstanceSetting.TagsSetting.TagsEntry
-	(*InstanceSetting_NotificationSetting_EmailSetting)(nil), // 20: memos.api.v1.InstanceSetting.NotificationSetting.EmailSetting
-	(*User)(nil),                  // 21: memos.api.v1.User
-	(*fieldmaskpb.FieldMask)(nil), // 22: google.protobuf.FieldMask
-	(*color.Color)(nil),           // 23: google.type.Color
-	(*emptypb.Empty)(nil),         // 24: google.protobuf.Empty
+	(*GetInstanceStatsRequest)(nil),                      // 9: memos.api.v1.GetInstanceStatsRequest
+	(*InstanceStats)(nil),                                // 10: memos.api.v1.InstanceStats
+	(*InstanceSetting_GeneralSetting)(nil),               // 11: memos.api.v1.InstanceSetting.GeneralSetting
+	(*InstanceSetting_StorageSetting)(nil),               // 12: memos.api.v1.InstanceSetting.StorageSetting
+	(*InstanceSetting_MemoRelatedSetting)(nil),           // 13: memos.api.v1.InstanceSetting.MemoRelatedSetting
+	(*InstanceSetting_TagMetadata)(nil),                  // 14: memos.api.v1.InstanceSetting.TagMetadata
+	(*InstanceSetting_TagsSetting)(nil),                  // 15: memos.api.v1.InstanceSetting.TagsSetting
+	(*InstanceSetting_NotificationSetting)(nil),          // 16: memos.api.v1.InstanceSetting.NotificationSetting
+	(*InstanceSetting_AISetting)(nil),                    // 17: memos.api.v1.InstanceSetting.AISetting
+	(*InstanceSetting_AIProviderConfig)(nil),             // 18: memos.api.v1.InstanceSetting.AIProviderConfig
+	(*InstanceSetting_GeneralSetting_CustomProfile)(nil), // 19: memos.api.v1.InstanceSetting.GeneralSetting.CustomProfile
+	(*InstanceSetting_StorageSetting_S3Config)(nil),      // 20: memos.api.v1.InstanceSetting.StorageSetting.S3Config
+	nil, // 21: memos.api.v1.InstanceSetting.TagsSetting.TagsEntry
+	(*InstanceSetting_NotificationSetting_EmailSetting)(nil), // 22: memos.api.v1.InstanceSetting.NotificationSetting.EmailSetting
+	(*InstanceStats_DatabaseStats)(nil),                      // 23: memos.api.v1.InstanceStats.DatabaseStats
+	(*User)(nil),                                             // 24: memos.api.v1.User
+	(*fieldmaskpb.FieldMask)(nil),                            // 25: google.protobuf.FieldMask
+	(*timestamppb.Timestamp)(nil),                            // 26: google.protobuf.Timestamp
+	(*color.Color)(nil),                                      // 27: google.type.Color
+	(*emptypb.Empty)(nil),                                    // 28: google.protobuf.Empty
 }
 var file_api_v1_instance_service_proto_depIdxs = []int32{
-	21, // 0: memos.api.v1.InstanceProfile.admin:type_name -> memos.api.v1.User
-	9,  // 1: memos.api.v1.InstanceSetting.general_setting:type_name -> memos.api.v1.InstanceSetting.GeneralSetting
-	10, // 2: memos.api.v1.InstanceSetting.storage_setting:type_name -> memos.api.v1.InstanceSetting.StorageSetting
-	11, // 3: memos.api.v1.InstanceSetting.memo_related_setting:type_name -> memos.api.v1.InstanceSetting.MemoRelatedSetting
-	13, // 4: memos.api.v1.InstanceSetting.tags_setting:type_name -> memos.api.v1.InstanceSetting.TagsSetting
-	14, // 5: memos.api.v1.InstanceSetting.notification_setting:type_name -> memos.api.v1.InstanceSetting.NotificationSetting
-	15, // 6: memos.api.v1.InstanceSetting.ai_setting:type_name -> memos.api.v1.InstanceSetting.AISetting
+	24, // 0: memos.api.v1.InstanceProfile.admin:type_name -> memos.api.v1.User
+	11, // 1: memos.api.v1.InstanceSetting.general_setting:type_name -> memos.api.v1.InstanceSetting.GeneralSetting
+	12, // 2: memos.api.v1.InstanceSetting.storage_setting:type_name -> memos.api.v1.InstanceSetting.StorageSetting
+	13, // 3: memos.api.v1.InstanceSetting.memo_related_setting:type_name -> memos.api.v1.InstanceSetting.MemoRelatedSetting
+	15, // 4: memos.api.v1.InstanceSetting.tags_setting:type_name -> memos.api.v1.InstanceSetting.TagsSetting
+	16, // 5: memos.api.v1.InstanceSetting.notification_setting:type_name -> memos.api.v1.InstanceSetting.NotificationSetting
+	17, // 6: memos.api.v1.InstanceSetting.ai_setting:type_name -> memos.api.v1.InstanceSetting.AISetting
 	5,  // 7: memos.api.v1.UpdateInstanceSettingRequest.setting:type_name -> memos.api.v1.InstanceSetting
-	22, // 8: memos.api.v1.UpdateInstanceSettingRequest.update_mask:type_name -> google.protobuf.FieldMask
-	20, // 9: memos.api.v1.TestInstanceEmailSettingRequest.email:type_name -> memos.api.v1.InstanceSetting.NotificationSetting.EmailSetting
-	17, // 10: memos.api.v1.InstanceSetting.GeneralSetting.custom_profile:type_name -> memos.api.v1.InstanceSetting.GeneralSetting.CustomProfile
-	2,  // 11: memos.api.v1.InstanceSetting.StorageSetting.storage_type:type_name -> memos.api.v1.InstanceSetting.StorageSetting.StorageType
-	18, // 12: memos.api.v1.InstanceSetting.StorageSetting.s3_config:type_name -> memos.api.v1.InstanceSetting.StorageSetting.S3Config
-	23, // 13: memos.api.v1.InstanceSetting.TagMetadata.background_color:type_name -> google.type.Color
-	19, // 14: memos.api.v1.InstanceSetting.TagsSetting.tags:type_name -> memos.api.v1.InstanceSetting.TagsSetting.TagsEntry
-	20, // 15: memos.api.v1.InstanceSetting.NotificationSetting.email:type_name -> memos.api.v1.InstanceSetting.NotificationSetting.EmailSetting
-	16, // 16: memos.api.v1.InstanceSetting.AISetting.providers:type_name -> memos.api.v1.InstanceSetting.AIProviderConfig
-	1,  // 17: memos.api.v1.InstanceSetting.AIProviderConfig.type:type_name -> memos.api.v1.InstanceSetting.AIProviderType
-	12, // 18: memos.api.v1.InstanceSetting.TagsSetting.TagsEntry.value:type_name -> memos.api.v1.InstanceSetting.TagMetadata
-	4,  // 19: memos.api.v1.InstanceService.GetInstanceProfile:input_type -> memos.api.v1.GetInstanceProfileRequest
-	6,  // 20: memos.api.v1.InstanceService.GetInstanceSetting:input_type -> memos.api.v1.GetInstanceSettingRequest
-	7,  // 21: memos.api.v1.InstanceService.UpdateInstanceSetting:input_type -> memos.api.v1.UpdateInstanceSettingRequest
-	8,  // 22: memos.api.v1.InstanceService.TestInstanceEmailSetting:input_type -> memos.api.v1.TestInstanceEmailSettingRequest
-	3,  // 23: memos.api.v1.InstanceService.GetInstanceProfile:output_type -> memos.api.v1.InstanceProfile
-	5,  // 24: memos.api.v1.InstanceService.GetInstanceSetting:output_type -> memos.api.v1.InstanceSetting
-	5,  // 25: memos.api.v1.InstanceService.UpdateInstanceSetting:output_type -> memos.api.v1.InstanceSetting
-	24, // 26: memos.api.v1.InstanceService.TestInstanceEmailSetting:output_type -> google.protobuf.Empty
-	23, // [23:27] is the sub-list for method output_type
-	19, // [19:23] is the sub-list for method input_type
-	19, // [19:19] is the sub-list for extension type_name
-	19, // [19:19] is the sub-list for extension extendee
-	0,  // [0:19] is the sub-list for field type_name
+	25, // 8: memos.api.v1.UpdateInstanceSettingRequest.update_mask:type_name -> google.protobuf.FieldMask
+	22, // 9: memos.api.v1.TestInstanceEmailSettingRequest.email:type_name -> memos.api.v1.InstanceSetting.NotificationSetting.EmailSetting
+	23, // 10: memos.api.v1.InstanceStats.database:type_name -> memos.api.v1.InstanceStats.DatabaseStats
+	26, // 11: memos.api.v1.InstanceStats.generated_time:type_name -> google.protobuf.Timestamp
+	19, // 12: memos.api.v1.InstanceSetting.GeneralSetting.custom_profile:type_name -> memos.api.v1.InstanceSetting.GeneralSetting.CustomProfile
+	2,  // 13: memos.api.v1.InstanceSetting.StorageSetting.storage_type:type_name -> memos.api.v1.InstanceSetting.StorageSetting.StorageType
+	20, // 14: memos.api.v1.InstanceSetting.StorageSetting.s3_config:type_name -> memos.api.v1.InstanceSetting.StorageSetting.S3Config
+	27, // 15: memos.api.v1.InstanceSetting.TagMetadata.background_color:type_name -> google.type.Color
+	21, // 16: memos.api.v1.InstanceSetting.TagsSetting.tags:type_name -> memos.api.v1.InstanceSetting.TagsSetting.TagsEntry
+	22, // 17: memos.api.v1.InstanceSetting.NotificationSetting.email:type_name -> memos.api.v1.InstanceSetting.NotificationSetting.EmailSetting
+	18, // 18: memos.api.v1.InstanceSetting.AISetting.providers:type_name -> memos.api.v1.InstanceSetting.AIProviderConfig
+	1,  // 19: memos.api.v1.InstanceSetting.AIProviderConfig.type:type_name -> memos.api.v1.InstanceSetting.AIProviderType
+	14, // 20: memos.api.v1.InstanceSetting.TagsSetting.TagsEntry.value:type_name -> memos.api.v1.InstanceSetting.TagMetadata
+	4,  // 21: memos.api.v1.InstanceService.GetInstanceProfile:input_type -> memos.api.v1.GetInstanceProfileRequest
+	6,  // 22: memos.api.v1.InstanceService.GetInstanceSetting:input_type -> memos.api.v1.GetInstanceSettingRequest
+	7,  // 23: memos.api.v1.InstanceService.UpdateInstanceSetting:input_type -> memos.api.v1.UpdateInstanceSettingRequest
+	8,  // 24: memos.api.v1.InstanceService.TestInstanceEmailSetting:input_type -> memos.api.v1.TestInstanceEmailSettingRequest
+	9,  // 25: memos.api.v1.InstanceService.GetInstanceStats:input_type -> memos.api.v1.GetInstanceStatsRequest
+	3,  // 26: memos.api.v1.InstanceService.GetInstanceProfile:output_type -> memos.api.v1.InstanceProfile
+	5,  // 27: memos.api.v1.InstanceService.GetInstanceSetting:output_type -> memos.api.v1.InstanceSetting
+	5,  // 28: memos.api.v1.InstanceService.UpdateInstanceSetting:output_type -> memos.api.v1.InstanceSetting
+	28, // 29: memos.api.v1.InstanceService.TestInstanceEmailSetting:output_type -> google.protobuf.Empty
+	10, // 30: memos.api.v1.InstanceService.GetInstanceStats:output_type -> memos.api.v1.InstanceStats
+	26, // [26:31] is the sub-list for method output_type
+	21, // [21:26] is the sub-list for method input_type
+	21, // [21:21] is the sub-list for extension type_name
+	21, // [21:21] is the sub-list for extension extendee
+	0,  // [0:21] is the sub-list for field type_name
 }
 
 func init() { file_api_v1_instance_service_proto_init() }
@@ -1656,7 +1830,7 @@ func file_api_v1_instance_service_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: unsafe.Slice(unsafe.StringData(file_api_v1_instance_service_proto_rawDesc), len(file_api_v1_instance_service_proto_rawDesc)),
 			NumEnums:      3,
-			NumMessages:   18,
+			NumMessages:   21,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/proto/gen/api/v1/instance_service.pb.gw.go b/proto/gen/api/v1/instance_service.pb.gw.go
index 5c4e726db..fb7f909ad 100644
--- a/proto/gen/api/v1/instance_service.pb.gw.go
+++ b/proto/gen/api/v1/instance_service.pb.gw.go
@@ -203,6 +203,27 @@ func local_request_InstanceService_TestInstanceEmailSetting_0(ctx context.Contex
 	return msg, metadata, err
 }
 
+func request_InstanceService_GetInstanceStats_0(ctx context.Context, marshaler runtime.Marshaler, client InstanceServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var (
+		protoReq GetInstanceStatsRequest
+		metadata runtime.ServerMetadata
+	)
+	if req.Body != nil {
+		_, _ = io.Copy(io.Discard, req.Body)
+	}
+	msg, err := client.GetInstanceStats(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+}
+
+func local_request_InstanceService_GetInstanceStats_0(ctx context.Context, marshaler runtime.Marshaler, server InstanceServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var (
+		protoReq GetInstanceStatsRequest
+		metadata runtime.ServerMetadata
+	)
+	msg, err := server.GetInstanceStats(ctx, &protoReq)
+	return msg, metadata, err
+}
+
 // RegisterInstanceServiceHandlerServer registers the http handlers for service InstanceService to "mux".
 // UnaryRPC     :call InstanceServiceServer directly.
 // StreamingRPC :currently unsupported pending https://github.com/grpc/grpc-go/issues/906.
@@ -289,6 +310,26 @@ func RegisterInstanceServiceHandlerServer(ctx context.Context, mux *runtime.Serv
 		}
 		forward_InstanceService_TestInstanceEmailSetting_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
 	})
+	mux.Handle(http.MethodGet, pattern_InstanceService_GetInstanceStats_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		var stream runtime.ServerTransportStream
+		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		annotatedContext, err := runtime.AnnotateIncomingContext(ctx, mux, req, "/memos.api.v1.InstanceService/GetInstanceStats", runtime.WithHTTPPathPattern("/api/v1/instance/stats"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_InstanceService_GetInstanceStats_0(annotatedContext, inboundMarshaler, server, req, pathParams)
+		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		forward_InstanceService_GetInstanceStats_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+	})
 
 	return nil
 }
@@ -397,6 +438,23 @@ func RegisterInstanceServiceHandlerClient(ctx context.Context, mux *runtime.Serv
 		}
 		forward_InstanceService_TestInstanceEmailSetting_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
 	})
+	mux.Handle(http.MethodGet, pattern_InstanceService_GetInstanceStats_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		annotatedContext, err := runtime.AnnotateContext(ctx, mux, req, "/memos.api.v1.InstanceService/GetInstanceStats", runtime.WithHTTPPathPattern("/api/v1/instance/stats"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_InstanceService_GetInstanceStats_0(annotatedContext, inboundMarshaler, client, req, pathParams)
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		forward_InstanceService_GetInstanceStats_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+	})
 	return nil
 }
 
@@ -405,6 +463,7 @@ var (
 	pattern_InstanceService_GetInstanceSetting_0       = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 1, 0, 4, 3, 5, 4}, []string{"api", "v1", "instance", "settings", "name"}, ""))
 	pattern_InstanceService_UpdateInstanceSetting_0    = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 1, 0, 4, 3, 5, 4}, []string{"api", "v1", "instance", "settings", "setting.name"}, ""))
 	pattern_InstanceService_TestInstanceEmailSetting_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 2, 4}, []string{"api", "v1", "instance", "settings", "notification"}, "testEmail"))
+	pattern_InstanceService_GetInstanceStats_0         = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"api", "v1", "instance", "stats"}, ""))
 )
 
 var (
@@ -412,4 +471,5 @@ var (
 	forward_InstanceService_GetInstanceSetting_0       = runtime.ForwardResponseMessage
 	forward_InstanceService_UpdateInstanceSetting_0    = runtime.ForwardResponseMessage
 	forward_InstanceService_TestInstanceEmailSetting_0 = runtime.ForwardResponseMessage
+	forward_InstanceService_GetInstanceStats_0         = runtime.ForwardResponseMessage
 )
diff --git a/proto/gen/api/v1/instance_service_grpc.pb.go b/proto/gen/api/v1/instance_service_grpc.pb.go
index 5d6b0eeb3..25575dcec 100644
--- a/proto/gen/api/v1/instance_service_grpc.pb.go
+++ b/proto/gen/api/v1/instance_service_grpc.pb.go
@@ -24,6 +24,7 @@ const (
 	InstanceService_GetInstanceSetting_FullMethodName       = "/memos.api.v1.InstanceService/GetInstanceSetting"
 	InstanceService_UpdateInstanceSetting_FullMethodName    = "/memos.api.v1.InstanceService/UpdateInstanceSetting"
 	InstanceService_TestInstanceEmailSetting_FullMethodName = "/memos.api.v1.InstanceService/TestInstanceEmailSetting"
+	InstanceService_GetInstanceStats_FullMethodName         = "/memos.api.v1.InstanceService/GetInstanceStats"
 )
 
 // InstanceServiceClient is the client API for InstanceService service.
@@ -38,6 +39,8 @@ type InstanceServiceClient interface {
 	UpdateInstanceSetting(ctx context.Context, in *UpdateInstanceSettingRequest, opts ...grpc.CallOption) (*InstanceSetting, error)
 	// Tests notification email delivery with the provided or stored SMTP settings.
 	TestInstanceEmailSetting(ctx context.Context, in *TestInstanceEmailSettingRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	// GetInstanceStats returns resource usage statistics for the instance. Admin only.
+	GetInstanceStats(ctx context.Context, in *GetInstanceStatsRequest, opts ...grpc.CallOption) (*InstanceStats, error)
 }
 
 type instanceServiceClient struct {
@@ -88,6 +91,16 @@ func (c *instanceServiceClient) TestInstanceEmailSetting(ctx context.Context, in
 	return out, nil
 }
 
+func (c *instanceServiceClient) GetInstanceStats(ctx context.Context, in *GetInstanceStatsRequest, opts ...grpc.CallOption) (*InstanceStats, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(InstanceStats)
+	err := c.cc.Invoke(ctx, InstanceService_GetInstanceStats_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // InstanceServiceServer is the server API for InstanceService service.
 // All implementations must embed UnimplementedInstanceServiceServer
 // for forward compatibility.
@@ -100,6 +113,8 @@ type InstanceServiceServer interface {
 	UpdateInstanceSetting(context.Context, *UpdateInstanceSettingRequest) (*InstanceSetting, error)
 	// Tests notification email delivery with the provided or stored SMTP settings.
 	TestInstanceEmailSetting(context.Context, *TestInstanceEmailSettingRequest) (*emptypb.Empty, error)
+	// GetInstanceStats returns resource usage statistics for the instance. Admin only.
+	GetInstanceStats(context.Context, *GetInstanceStatsRequest) (*InstanceStats, error)
 	mustEmbedUnimplementedInstanceServiceServer()
 }
 
@@ -122,6 +137,9 @@ func (UnimplementedInstanceServiceServer) UpdateInstanceSetting(context.Context,
 func (UnimplementedInstanceServiceServer) TestInstanceEmailSetting(context.Context, *TestInstanceEmailSettingRequest) (*emptypb.Empty, error) {
 	return nil, status.Error(codes.Unimplemented, "method TestInstanceEmailSetting not implemented")
 }
+func (UnimplementedInstanceServiceServer) GetInstanceStats(context.Context, *GetInstanceStatsRequest) (*InstanceStats, error) {
+	return nil, status.Error(codes.Unimplemented, "method GetInstanceStats not implemented")
+}
 func (UnimplementedInstanceServiceServer) mustEmbedUnimplementedInstanceServiceServer() {}
 func (UnimplementedInstanceServiceServer) testEmbeddedByValue()                         {}
 
@@ -215,6 +233,24 @@ func _InstanceService_TestInstanceEmailSetting_Handler(srv interface{}, ctx cont
 	return interceptor(ctx, in, info, handler)
 }
 
+func _InstanceService_GetInstanceStats_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetInstanceStatsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(InstanceServiceServer).GetInstanceStats(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: InstanceService_GetInstanceStats_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(InstanceServiceServer).GetInstanceStats(ctx, req.(*GetInstanceStatsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // InstanceService_ServiceDesc is the grpc.ServiceDesc for InstanceService service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -238,6 +274,10 @@ var InstanceService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "TestInstanceEmailSetting",
 			Handler:    _InstanceService_TestInstanceEmailSetting_Handler,
 		},
+		{
+			MethodName: "GetInstanceStats",
+			Handler:    _InstanceService_GetInstanceStats_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "api/v1/instance_service.proto",
diff --git a/proto/gen/openapi.yaml b/proto/gen/openapi.yaml
index d622c06ff..ec16f65a5 100644
--- a/proto/gen/openapi.yaml
+++ b/proto/gen/openapi.yaml
@@ -498,6 +498,25 @@ paths:
                         application/json:
                             schema:
                                 $ref: '#/components/schemas/Status'
+    /api/v1/instance/stats:
+        get:
+            tags:
+                - InstanceService
+            description: GetInstanceStats returns resource usage statistics for the instance. Admin only.
+            operationId: InstanceService_GetInstanceStats
+            responses:
+                "200":
+                    description: OK
+                    content:
+                        application/json:
+                            schema:
+                                $ref: '#/components/schemas/InstanceStats'
+                default:
+                    description: Default error response
+                    content:
+                        application/json:
+                            schema:
+                                $ref: '#/components/schemas/Status'
     /api/v1/instance/{instance}/*:
         get:
             tags:
@@ -2789,6 +2808,29 @@ components:
                          so a single entry like "project/.*" matches all tags under that prefix.
                          Exact tag names are also valid (they are trivially valid regex patterns).
             description: Tag metadata configuration.
+        InstanceStats:
+            type: object
+            properties:
+                database:
+                    $ref: '#/components/schemas/InstanceStats_DatabaseStats'
+                localStorageBytes:
+                    type: string
+                    description: Recursive size of the data directory in bytes. -1 if unavailable.
+                generatedTime:
+                    type: string
+                    description: Server-side timestamp when the snapshot was generated.
+                    format: date-time
+            description: Resource usage statistics for the instance.
+        InstanceStats_DatabaseStats:
+            type: object
+            properties:
+                driver:
+                    type: string
+                    description: driver is one of "sqlite", "mysql", "postgres".
+                sizeBytes:
+                    type: string
+                    description: size_bytes is the database size in bytes; -1 if unavailable.
+            description: Database size statistics.
         LinkMetadata:
             type: object
             properties:
diff --git a/server/router/api/v1/connect_services.go b/server/router/api/v1/connect_services.go
index 486b30761..60bc0566b 100644
--- a/server/router/api/v1/connect_services.go
+++ b/server/router/api/v1/connect_services.go
@@ -47,6 +47,14 @@ func (s *ConnectServiceHandler) TestInstanceEmailSetting(ctx context.Context, re
 	return connect.NewResponse(resp), nil
 }
 
+func (s *ConnectServiceHandler) GetInstanceStats(ctx context.Context, req *connect.Request[v1pb.GetInstanceStatsRequest]) (*connect.Response[v1pb.InstanceStats], error) {
+	resp, err := s.APIV1Service.GetInstanceStats(ctx, req.Msg)
+	if err != nil {
+		return nil, convertGRPCError(err)
+	}
+	return connect.NewResponse(resp), nil
+}
+
 // AuthService
 //
 // Auth service methods need special handling for response headers (cookies).
diff --git a/server/router/api/v1/instance_stats.go b/server/router/api/v1/instance_stats.go
new file mode 100644
index 000000000..f0015e5b0
--- /dev/null
+++ b/server/router/api/v1/instance_stats.go
@@ -0,0 +1,165 @@
+package v1
+
+import (
+	"context"
+	"log/slog"
+	"os"
+	"path/filepath"
+	"sync"
+	"time"
+
+	"github.com/pkg/errors"
+	"golang.org/x/sync/errgroup"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/timestamppb"
+
+	v1pb "github.com/usememos/memos/proto/gen/api/v1"
+	"github.com/usememos/memos/store"
+)
+
+const instanceStatsCacheTTL = 60 * time.Second
+
+// instanceStatsCache is a single-value, mutex-guarded cache for InstanceStats.
+type instanceStatsCache struct {
+	mu     sync.Mutex
+	value  *v1pb.InstanceStats
+	expiry time.Time
+}
+
+func (c *instanceStatsCache) get() (*v1pb.InstanceStats, bool) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	if c.value == nil || time.Now().After(c.expiry) {
+		return nil, false
+	}
+	return c.value, true
+}
+
+func (c *instanceStatsCache) set(v *v1pb.InstanceStats, ttl time.Duration) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	c.value = v
+	c.expiry = time.Now().Add(ttl)
+}
+
+// GetInstanceStats returns resource usage statistics. Admin only.
+func (s *APIV1Service) GetInstanceStats(ctx context.Context, _ *v1pb.GetInstanceStatsRequest) (*v1pb.InstanceStats, error) {
+	user, err := s.fetchCurrentUser(ctx)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "failed to get current user: %v", err)
+	}
+	if user == nil {
+		return nil, status.Errorf(codes.Unauthenticated, "user not authenticated")
+	}
+	if user.Role != store.RoleAdmin {
+		return nil, status.Errorf(codes.PermissionDenied, "permission denied")
+	}
+
+	if cached, ok := s.instanceStatsCache.get(); ok {
+		return cached, nil
+	}
+
+	stats, err := s.computeInstanceStats(ctx)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "failed to compute instance stats: %v", err)
+	}
+	s.instanceStatsCache.set(stats, instanceStatsCacheTTL)
+	return stats, nil
+}
+
+// computeInstanceStats runs all stat subqueries in parallel and assembles the result.
+// Per-subtask failures degrade to -1 sentinel values; only a total failure (every
+// subtask errored) is propagated as an error.
+func (s *APIV1Service) computeInstanceStats(ctx context.Context) (*v1pb.InstanceStats, error) {
+	stats := &v1pb.InstanceStats{
+		Database: &v1pb.InstanceStats_DatabaseStats{
+			Driver:    s.Profile.Driver,
+			SizeBytes: -1,
+		},
+		LocalStorageBytes: -1,
+		GeneratedTime:     timestamppb.Now(),
+	}
+
+	type result struct {
+		name string
+		err  error
+	}
+	var (
+		mu      sync.Mutex
+		results []result
+		record  = func(name string, err error) {
+			mu.Lock()
+			results = append(results, result{name, err})
+			mu.Unlock()
+		}
+	)
+
+	g, gctx := errgroup.WithContext(ctx)
+
+	g.Go(func() error {
+		size, err := s.Store.GetDriver().GetDatabaseSize(gctx)
+		if err != nil {
+			record("database_size", err)
+			return nil
+		}
+		stats.Database.SizeBytes = size
+		return nil
+	})
+
+	g.Go(func() error {
+		size, err := walkLocalStorage(s.Profile.Data)
+		if err != nil {
+			record("local_storage", err)
+			return nil
+		}
+		stats.LocalStorageBytes = size
+		return nil
+	})
+
+	_ = g.Wait()
+
+	for _, r := range results {
+		slog.Warn("instance stats subtask failed", slog.String("subtask", r.name), slog.String("err", r.err.Error()))
+	}
+
+	const totalSubtasks = 2
+	if len(results) == totalSubtasks {
+		return nil, errors.New("all instance stats subtasks failed")
+	}
+	return stats, nil
+}
+
+// walkLocalStorage returns the recursive size of dir in bytes.
+// Symlinks are not followed; per-entry errors below the root are ignored
+// (the walk continues). An error accessing the root itself is returned.
+func walkLocalStorage(dir string) (int64, error) {
+	if dir == "" {
+		return -1, errors.New("empty data directory")
+	}
+	var total int64
+	err := filepath.WalkDir(dir, func(path string, entry os.DirEntry, walkErr error) error {
+		if walkErr != nil {
+			if path == dir {
+				// Root itself is inaccessible — abort the walk.
+				return walkErr
+			}
+			// Ignore per-entry errors (e.g. permission denied on a single file).
+			return nil
+		}
+		if entry.IsDir() {
+			return nil
+		}
+		info, err := entry.Info()
+		if err != nil {
+			// Ignore stat errors on individual entries; continue the walk.
+			return nil //nolint:nilerr
+		}
+		total += info.Size()
+		return nil
+	})
+	if err != nil {
+		return -1, errors.Wrap(err, "walk failed")
+	}
+	return total, nil
+}
diff --git a/server/router/api/v1/instance_stats_test.go b/server/router/api/v1/instance_stats_test.go
new file mode 100644
index 000000000..5414961f8
--- /dev/null
+++ b/server/router/api/v1/instance_stats_test.go
@@ -0,0 +1,34 @@
+package v1
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestWalkLocalStorage_SumsFileSizes(t *testing.T) {
+	dir := t.TempDir()
+	require.NoError(t, os.WriteFile(filepath.Join(dir, "a.txt"), []byte("hello"), 0o600))  // 5
+	require.NoError(t, os.WriteFile(filepath.Join(dir, "b.txt"), []byte("world!"), 0o600)) // 6
+	sub := filepath.Join(dir, "sub")
+	require.NoError(t, os.Mkdir(sub, 0o700))
+	require.NoError(t, os.WriteFile(filepath.Join(sub, "c.txt"), []byte("xx"), 0o600)) // 2
+
+	size, err := walkLocalStorage(dir)
+	require.NoError(t, err)
+	require.Equal(t, int64(13), size)
+}
+
+func TestWalkLocalStorage_EmptyDir(t *testing.T) {
+	size, err := walkLocalStorage("")
+	require.Error(t, err)
+	require.Equal(t, int64(-1), size)
+}
+
+func TestWalkLocalStorage_NonexistentDir(t *testing.T) {
+	size, err := walkLocalStorage(filepath.Join(t.TempDir(), "does-not-exist"))
+	require.Error(t, err)
+	require.Equal(t, int64(-1), size)
+}
diff --git a/server/router/api/v1/test/instance_stats_test.go b/server/router/api/v1/test/instance_stats_test.go
new file mode 100644
index 000000000..071486bf4
--- /dev/null
+++ b/server/router/api/v1/test/instance_stats_test.go
@@ -0,0 +1,72 @@
+package test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+
+	v1pb "github.com/usememos/memos/proto/gen/api/v1"
+)
+
+func TestGetInstanceStats_HappyPath(t *testing.T) {
+	ctx := context.Background()
+	ts := NewTestService(t)
+	defer ts.Cleanup()
+
+	admin, err := ts.CreateHostUser(ctx, "admin1")
+	require.NoError(t, err)
+	adminCtx := ts.CreateUserContext(ctx, admin.ID)
+
+	resp, err := ts.Service.GetInstanceStats(adminCtx, &v1pb.GetInstanceStatsRequest{})
+	require.NoError(t, err)
+	require.NotNil(t, resp)
+
+	require.NotNil(t, resp.Database)
+	require.Equal(t, "sqlite", resp.Database.Driver)
+	require.Greater(t, resp.Database.SizeBytes, int64(0))
+
+	require.GreaterOrEqual(t, resp.LocalStorageBytes, int64(0))
+}
+
+func TestGetInstanceStats_NonAdminDenied(t *testing.T) {
+	ctx := context.Background()
+	ts := NewTestService(t)
+	defer ts.Cleanup()
+
+	// Need an admin to exist (otherwise instance is uninitialized).
+	admin, err := ts.CreateHostUser(ctx, "admin1")
+	require.NoError(t, err)
+	_ = admin
+
+	regular, err := ts.CreateRegularUser(ctx, "alice")
+	require.NoError(t, err)
+	regularCtx := ts.CreateUserContext(ctx, regular.ID)
+
+	_, err = ts.Service.GetInstanceStats(regularCtx, &v1pb.GetInstanceStatsRequest{})
+	require.Error(t, err)
+	st, ok := status.FromError(err)
+	require.True(t, ok)
+	require.Equal(t, codes.PermissionDenied, st.Code())
+}
+
+func TestGetInstanceStats_Cache(t *testing.T) {
+	ctx := context.Background()
+	ts := NewTestService(t)
+	defer ts.Cleanup()
+
+	admin, err := ts.CreateHostUser(ctx, "admin1")
+	require.NoError(t, err)
+	adminCtx := ts.CreateUserContext(ctx, admin.ID)
+
+	first, err := ts.Service.GetInstanceStats(adminCtx, &v1pb.GetInstanceStatsRequest{})
+	require.NoError(t, err)
+
+	second, err := ts.Service.GetInstanceStats(adminCtx, &v1pb.GetInstanceStatsRequest{})
+	require.NoError(t, err)
+
+	// Cache hit: same pointer (the cache returns the stored *InstanceStats directly).
+	require.Same(t, first, second)
+}
diff --git a/server/router/api/v1/v1.go b/server/router/api/v1/v1.go
index a402f2976..17269da21 100644
--- a/server/router/api/v1/v1.go
+++ b/server/router/api/v1/v1.go
@@ -42,6 +42,9 @@ type APIV1Service struct {
 	// thumbnailSemaphore limits concurrent thumbnail generation to prevent memory exhaustion
 	thumbnailSemaphore       *semaphore.Weighted
 	imageProcessingSemaphore *semaphore.Weighted
+
+	// instanceStatsCache memoizes GetInstanceStats results for instanceStatsCacheTTL.
+	instanceStatsCache instanceStatsCache
 }
 
 func NewAPIV1Service(secret string, profile *profile.Profile, store *store.Store) *APIV1Service {
diff --git a/server/router/frontend/frontend_test.go b/server/router/frontend/frontend_test.go
index 912c48136..aa1959e1b 100644
--- a/server/router/frontend/frontend_test.go
+++ b/server/router/frontend/frontend_test.go
@@ -72,7 +72,7 @@ func TestFrontendService_SitemapXML(t *testing.T) {
 
 	require.Equal(t, http.StatusOK, rec.Code)
 	require.Contains(t, rec.Header().Get("Content-Type"), "application/xml")
-	require.Contains(t, rec.Body.String(), `<loc>https://demo.usememos.com/m/publicmemo</loc>`)
+	require.Contains(t, rec.Body.String(), `<loc>https://demo.usememos.com/memos/publicmemo</loc>`)
 	require.NotContains(t, rec.Body.String(), "privatememo")
 }
 
diff --git a/store/attachment.go b/store/attachment.go
index d0b2742f3..69869a0b9 100644
--- a/store/attachment.go
+++ b/store/attachment.go
@@ -177,7 +177,7 @@ func (s *Store) DeleteAttachments(ctx context.Context, attachments []*Attachment
 		if instanceStorageSettingErr != nil && AttachmentNeedsInstanceStorageSetting(attachment) {
 			err = instanceStorageSettingErr
 		} else {
-			err = s.deleteAttachmentStorage(ctx, attachment, instanceStorageSetting)
+			err = s.deleteAttachmentStorageImpl(ctx, attachment, instanceStorageSetting)
 		}
 		if err != nil {
 			if attachment.StorageType == storepb.AttachmentStorageType_LOCAL {
@@ -191,15 +191,15 @@ func (s *Store) DeleteAttachments(ctx context.Context, attachments []*Attachment
 }
 
 func (s *Store) DeleteAttachmentStorage(ctx context.Context, attachment *Attachment) error {
-	return s.deleteAttachmentStorage(ctx, attachment, nil)
+	return s.deleteAttachmentStorageImpl(ctx, attachment, nil)
 }
 
 // DeleteAttachmentStorageWithInstanceSetting deletes attachment storage using a preloaded instance storage setting.
 func (s *Store) DeleteAttachmentStorageWithInstanceSetting(ctx context.Context, attachment *Attachment, instanceStorageSetting *storepb.InstanceStorageSetting) error {
-	return s.deleteAttachmentStorage(ctx, attachment, instanceStorageSetting)
+	return s.deleteAttachmentStorageImpl(ctx, attachment, instanceStorageSetting)
 }
 
-func (s *Store) deleteAttachmentStorage(ctx context.Context, attachment *Attachment, instanceStorageSetting *storepb.InstanceStorageSetting) error {
+func (s *Store) deleteAttachmentStorageImpl(ctx context.Context, attachment *Attachment, instanceStorageSetting *storepb.InstanceStorageSetting) error {
 	if attachment == nil {
 		return nil
 	}
diff --git a/store/db/mysql/mysql.go b/store/db/mysql/mysql.go
index 2fd3ddb9d..dee92d9d4 100644
--- a/store/db/mysql/mysql.go
+++ b/store/db/mysql/mysql.go
@@ -57,6 +57,18 @@ func (d *DB) IsInitialized(ctx context.Context) (bool, error) {
 	return exists, nil
 }
 
+// GetDatabaseSize returns the database size in bytes, or -1 if unavailable.
+func (d *DB) GetDatabaseSize(ctx context.Context) (int64, error) {
+	var size int64
+	const q = `SELECT COALESCE(SUM(data_length + index_length), 0)
+	           FROM information_schema.tables
+	           WHERE table_schema = DATABASE()`
+	if err := d.db.QueryRowContext(ctx, q).Scan(&size); err != nil {
+		return -1, errors.Wrap(err, "failed to query mysql database size")
+	}
+	return size, nil
+}
+
 func mergeDSN(baseDSN string) (string, error) {
 	config, err := mysql.ParseDSN(baseDSN)
 	if err != nil {
diff --git a/store/db/postgres/postgres.go b/store/db/postgres/postgres.go
index 1744a2cb5..73ccd0102 100644
--- a/store/db/postgres/postgres.go
+++ b/store/db/postgres/postgres.go
@@ -55,3 +55,13 @@ func (d *DB) IsInitialized(ctx context.Context) (bool, error) {
 	}
 	return exists, nil
 }
+
+// GetDatabaseSize returns the database size in bytes, or -1 if unavailable.
+func (d *DB) GetDatabaseSize(ctx context.Context) (int64, error) {
+	var size int64
+	const q = `SELECT pg_database_size(current_database())`
+	if err := d.db.QueryRowContext(ctx, q).Scan(&size); err != nil {
+		return -1, errors.Wrap(err, "failed to query postgres database size")
+	}
+	return size, nil
+}
diff --git a/store/db/sqlite/sqlite.go b/store/db/sqlite/sqlite.go
index dcc979832..892918e6a 100644
--- a/store/db/sqlite/sqlite.go
+++ b/store/db/sqlite/sqlite.go
@@ -73,3 +73,15 @@ func (d *DB) IsInitialized(ctx context.Context) (bool, error) {
 	}
 	return exists, nil
 }
+
+// GetDatabaseSize returns the database size in bytes, or -1 if unavailable.
+func (d *DB) GetDatabaseSize(ctx context.Context) (int64, error) {
+	var pageCount, pageSize int64
+	if err := d.db.QueryRowContext(ctx, "PRAGMA page_count").Scan(&pageCount); err != nil {
+		return -1, errors.Wrap(err, "failed to read page_count")
+	}
+	if err := d.db.QueryRowContext(ctx, "PRAGMA page_size").Scan(&pageSize); err != nil {
+		return -1, errors.Wrap(err, "failed to read page_size")
+	}
+	return pageCount * pageSize, nil
+}
diff --git a/store/driver.go b/store/driver.go
index 54816bbf2..f3d000c1e 100644
--- a/store/driver.go
+++ b/store/driver.go
@@ -13,6 +13,11 @@ type Driver interface {
 
 	IsInitialized(ctx context.Context) (bool, error)
 
+	// GetDatabaseSize returns the database size in bytes, or -1 if unavailable.
+	// A non-nil error indicates a hard failure; -1 with nil error means the
+	// driver cannot report a size from the underlying database.
+	GetDatabaseSize(ctx context.Context) (int64, error)
+
 	// Attachment model related methods.
 	CreateAttachment(ctx context.Context, create *Attachment) (*Attachment, error)
 	ListAttachments(ctx context.Context, find *FindAttachment) ([]*Attachment, error)
diff --git a/store/test/database_size_test.go b/store/test/database_size_test.go
new file mode 100644
index 000000000..6095c51f5
--- /dev/null
+++ b/store/test/database_size_test.go
@@ -0,0 +1,19 @@
+package test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestGetDatabaseSize(t *testing.T) {
+	t.Parallel()
+	ctx := context.Background()
+	ts := NewTestingStore(ctx, t)
+	defer ts.Close()
+
+	size, err := ts.GetDriver().GetDatabaseSize(ctx)
+	require.NoError(t, err)
+	require.Greater(t, size, int64(0), "expected database size > 0")
+}
diff --git a/web/src/components/Settings/ResourceStatsSection.tsx b/web/src/components/Settings/ResourceStatsSection.tsx
new file mode 100644
index 000000000..08308a5d9
--- /dev/null
+++ b/web/src/components/Settings/ResourceStatsSection.tsx
@@ -0,0 +1,104 @@
+import { useQueryClient } from "@tanstack/react-query";
+import { RefreshCwIcon } from "lucide-react";
+import { Button } from "@/components/ui/button";
+import { instanceKeys, useInstanceStats } from "@/hooks/useInstanceQueries";
+import { useTranslate } from "@/utils/i18n";
+import SettingGroup from "./SettingGroup";
+import { SettingList, SettingListItem, SettingPanel } from "./SettingList";
+import SettingSection from "./SettingSection";
+
+const formatBytes = (bytes: number | bigint): string => {
+  const n = typeof bytes === "bigint" ? Number(bytes) : bytes;
+  if (n < 0) return "—";
+  if (n === 0) return "0 B";
+  const units = ["B", "KB", "MB", "GB", "TB"];
+  const i = Math.min(units.length - 1, Math.floor(Math.log(n) / Math.log(1024)));
+  return `${(n / 1024 ** i).toFixed(i === 0 ? 0 : 1)} ${units[i]}`;
+};
+
+const formatRelativeTime = (date: Date): string => {
+  const seconds = Math.max(0, Math.floor((Date.now() - date.getTime()) / 1000));
+  if (seconds < 60) return `${seconds}s ago`;
+  const minutes = Math.floor(seconds / 60);
+  if (minutes < 60) return `${minutes}m ago`;
+  const hours = Math.floor(minutes / 60);
+  return `${hours}h ago`;
+};
+
+const renderBytes = (value: bigint | number | undefined, unknown: string): string => {
+  if (value === undefined) return unknown;
+  const n = typeof value === "bigint" ? Number(value) : value;
+  if (n < 0) return unknown;
+  return formatBytes(n);
+};
+
+const StatValue = ({ value }: { value: string }) => (
+  <span className="block min-w-0 max-w-full break-all text-right font-mono text-sm tabular-nums text-foreground">{value}</span>
+);
+
+const StatRow = ({ label, value }: { label: string; value: string }) => (
+  <SettingListItem label={label} controlClassName="w-full justify-end sm:w-auto">
+    <StatValue value={value} />
+  </SettingListItem>
+);
+
+const ResourceStatsSection = () => {
+  const t = useTranslate();
+  const queryClient = useQueryClient();
+  const { data, isLoading, isError, isFetching } = useInstanceStats();
+
+  const unknown = t("setting.resource-stats.unknown");
+  const generatedTime = data?.generatedTime
+    ? t("setting.resource-stats.last-updated", {
+        ago: formatRelativeTime(new Date(Number(data.generatedTime.seconds) * 1000)),
+      })
+    : undefined;
+
+  return (
+    <SettingSection
+      title={t("setting.resource-stats.title")}
+      description={t("setting.resource-stats.description")}
+      actions={
+        <>
+          {generatedTime ? <span className="text-xs text-muted-foreground">{generatedTime}</span> : null}
+          <Button
+            variant="outline"
+            size="sm"
+            disabled={isFetching}
+            onClick={() => void queryClient.invalidateQueries({ queryKey: instanceKeys.stats() })}
+          >
+            <RefreshCwIcon className="mr-1 size-4" />
+            {t("setting.resource-stats.refresh")}
+          </Button>
+        </>
+      }
+    >
+      {isError ? <div className="text-destructive text-sm">{t("setting.resource-stats.load-error")}</div> : null}
+
+      {isLoading && !data ? (
+        <SettingPanel>
+          <div className="px-3 py-3 text-sm text-muted-foreground">…</div>
+        </SettingPanel>
+      ) : null}
+
+      {data ? (
+        <>
+          <SettingGroup title={t("setting.resource-stats.database.title")}>
+            <SettingList>
+              <StatRow label={t("setting.resource-stats.database.driver")} value={data.database?.driver || unknown} />
+              <StatRow label={t("setting.resource-stats.database.size")} value={renderBytes(data.database?.sizeBytes, unknown)} />
+            </SettingList>
+          </SettingGroup>
+
+          <SettingGroup title={t("setting.resource-stats.local-storage.title")} showSeparator>
+            <SettingList>
+              <StatRow label={t("setting.resource-stats.local-storage.size")} value={renderBytes(data.localStorageBytes, unknown)} />
+            </SettingList>
+          </SettingGroup>
+        </>
+      ) : null}
+    </SettingSection>
+  );
+};
+
+export default ResourceStatsSection;
diff --git a/web/src/components/Settings/settingSections.ts b/web/src/components/Settings/settingSections.ts
index f2242122e..d04e9fa92 100644
--- a/web/src/components/Settings/settingSections.ts
+++ b/web/src/components/Settings/settingSections.ts
@@ -1,4 +1,5 @@
 import {
+  BarChart3Icon,
   CogIcon,
   DatabaseIcon,
   HeartHandshakeIcon,
@@ -20,6 +21,7 @@ import MemoRelatedSettings from "@/components/Settings/MemoRelatedSettings";
 import MyAccountSection from "@/components/Settings/MyAccountSection";
 import NotificationSection from "@/components/Settings/NotificationSection";
 import PreferencesSection from "@/components/Settings/PreferencesSection";
+import ResourceStatsSection from "@/components/Settings/ResourceStatsSection";
 import SSOSection from "@/components/Settings/SSOSection";
 import StorageSection from "@/components/Settings/StorageSection";
 import TagsSection from "@/components/Settings/TagsSection";
@@ -37,7 +39,8 @@ export type SettingSectionKey =
   | "notification"
   | "sso"
   | "tags"
-  | "ai";
+  | "ai"
+  | "resource-stats";
 
 type SettingSectionScope = "basic" | "admin";
 
@@ -132,6 +135,13 @@ export const SETTINGS_SECTIONS: SettingSectionDefinition[] = [
     component: AISection,
     preloadSettingKeys: [InstanceSetting_Key.AI],
   },
+  {
+    key: "resource-stats",
+    scope: "admin",
+    labelKey: "setting.resource-stats.label",
+    icon: BarChart3Icon,
+    component: ResourceStatsSection,
+  },
 ];
 
 export const DEFAULT_SETTING_SECTION: SettingSectionKey = "my-account";
diff --git a/web/src/hooks/useInstanceQueries.ts b/web/src/hooks/useInstanceQueries.ts
index 51124fc11..f48fba6e0 100644
--- a/web/src/hooks/useInstanceQueries.ts
+++ b/web/src/hooks/useInstanceQueries.ts
@@ -8,6 +8,7 @@ export const instanceKeys = {
   profile: () => [...instanceKeys.all, "profile"] as const,
   settings: () => [...instanceKeys.all, "settings"] as const,
   setting: (key: InstanceSetting_Key) => [...instanceKeys.settings(), key] as const,
+  stats: () => [...instanceKeys.all, "stats"] as const,
 };
 
 // Build setting name from key
@@ -16,6 +17,15 @@ const buildInstanceSettingName = (key: InstanceSetting_Key): string => {
   return `instance/settings/${keyName}`;
 };
 
+// Hook to fetch instance resource statistics. Admin only on the server side.
+export function useInstanceStats() {
+  return useQuery({
+    queryKey: instanceKeys.stats(),
+    queryFn: () => instanceServiceClient.getInstanceStats({}),
+    staleTime: 60_000, // 60s — matches server-side cache TTL
+  });
+}
+
 // Hook to fetch instance profile
 export function useInstanceProfile() {
   return useQuery({
diff --git a/web/src/locales/en.json b/web/src/locales/en.json
index 671fede71..10156590d 100644
--- a/web/src/locales/en.json
+++ b/web/src/locales/en.json
@@ -744,6 +744,24 @@
       "invalid-regex": "Invalid or unsafe regex pattern.",
       "used-count": "{{count}} memos",
       "using-default-color": "Using default color."
+    },
+    "resource-stats": {
+      "label": "Resources",
+      "title": "Resource Statistics",
+      "description": "Resource usage for this instance.",
+      "database": {
+        "title": "Database",
+        "driver": "Driver",
+        "size": "Size"
+      },
+      "local-storage": {
+        "title": "Local Storage",
+        "size": "Data directory size"
+      },
+      "unknown": "Unknown",
+      "last-updated": "Last updated {{ago}}",
+      "refresh": "Refresh",
+      "load-error": "Failed to load statistics"
     }
   },
   "tag": {
diff --git a/web/src/types/proto/api/v1/instance_service_pb.ts b/web/src/types/proto/api/v1/instance_service_pb.ts
index 9b2c38a1b..46a60a9a1 100644
--- a/web/src/types/proto/api/v1/instance_service_pb.ts
+++ b/web/src/types/proto/api/v1/instance_service_pb.ts
@@ -10,8 +10,8 @@ import { file_google_api_annotations } from "../../google/api/annotations_pb";
 import { file_google_api_client } from "../../google/api/client_pb";
 import { file_google_api_field_behavior } from "../../google/api/field_behavior_pb";
 import { file_google_api_resource } from "../../google/api/resource_pb";
-import type { EmptySchema, FieldMask } from "@bufbuild/protobuf/wkt";
-import { file_google_protobuf_empty, file_google_protobuf_field_mask } from "@bufbuild/protobuf/wkt";
+import type { EmptySchema, FieldMask, Timestamp } from "@bufbuild/protobuf/wkt";
+import { file_google_protobuf_empty, file_google_protobuf_field_mask, file_google_protobuf_timestamp } from "@bufbuild/protobuf/wkt";
 import type { Color } from "../../google/type/color_pb";
 import { file_google_type_color } from "../../google/type/color_pb";
 import type { Message } from "@bufbuild/protobuf";
@@ -20,7 +20,7 @@ import type { Message } from "@bufbuild/protobuf";
  * Describes the file api/v1/instance_service.proto.
  */
 export const file_api_v1_instance_service: GenFile = /*@__PURE__*/
-  fileDesc("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", [file_api_v1_user_service, file_google_api_annotations, file_google_api_client, file_google_api_field_behavior, file_google_api_resource, file_google_protobuf_empty, file_google_protobuf_field_mask, file_google_type_color]);
+  fileDesc("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[file_api_v1_user_service, file_google_api_annotations, file_google_api_client, file_google_api_field_behavior, file_google_api_resource, file_google_protobuf_empty, file_google_protobuf_field_mask, file_google_protobuf_timestamp, file_google_type_color]);
 
 /**
  * Instance profile message containing basic instance information.
@@ -791,6 +791,82 @@ export type TestInstanceEmailSettingRequest = Message<"memos.api.v1.TestInstance
 export const TestInstanceEmailSettingRequestSchema: GenMessage<TestInstanceEmailSettingRequest> = /*@__PURE__*/
   messageDesc(file_api_v1_instance_service, 5);
 
+/**
+ * Request message for GetInstanceStats.
+ *
+ * @generated from message memos.api.v1.GetInstanceStatsRequest
+ */
+export type GetInstanceStatsRequest = Message<"memos.api.v1.GetInstanceStatsRequest"> & {
+};
+
+/**
+ * Describes the message memos.api.v1.GetInstanceStatsRequest.
+ * Use `create(GetInstanceStatsRequestSchema)` to create a new message.
+ */
+export const GetInstanceStatsRequestSchema: GenMessage<GetInstanceStatsRequest> = /*@__PURE__*/
+  messageDesc(file_api_v1_instance_service, 6);
+
+/**
+ * Resource usage statistics for the instance.
+ *
+ * @generated from message memos.api.v1.InstanceStats
+ */
+export type InstanceStats = Message<"memos.api.v1.InstanceStats"> & {
+  /**
+   * @generated from field: memos.api.v1.InstanceStats.DatabaseStats database = 1;
+   */
+  database?: InstanceStats_DatabaseStats | undefined;
+
+  /**
+   * Recursive size of the data directory in bytes. -1 if unavailable.
+   *
+   * @generated from field: int64 local_storage_bytes = 2;
+   */
+  localStorageBytes: bigint;
+
+  /**
+   * Server-side timestamp when the snapshot was generated.
+   *
+   * @generated from field: google.protobuf.Timestamp generated_time = 4;
+   */
+  generatedTime?: Timestamp | undefined;
+};
+
+/**
+ * Describes the message memos.api.v1.InstanceStats.
+ * Use `create(InstanceStatsSchema)` to create a new message.
+ */
+export const InstanceStatsSchema: GenMessage<InstanceStats> = /*@__PURE__*/
+  messageDesc(file_api_v1_instance_service, 7);
+
+/**
+ * Database size statistics.
+ *
+ * @generated from message memos.api.v1.InstanceStats.DatabaseStats
+ */
+export type InstanceStats_DatabaseStats = Message<"memos.api.v1.InstanceStats.DatabaseStats"> & {
+  /**
+   * driver is one of "sqlite", "mysql", "postgres".
+   *
+   * @generated from field: string driver = 1;
+   */
+  driver: string;
+
+  /**
+   * size_bytes is the database size in bytes; -1 if unavailable.
+   *
+   * @generated from field: int64 size_bytes = 2;
+   */
+  sizeBytes: bigint;
+};
+
+/**
+ * Describes the message memos.api.v1.InstanceStats.DatabaseStats.
+ * Use `create(InstanceStats_DatabaseStatsSchema)` to create a new message.
+ */
+export const InstanceStats_DatabaseStatsSchema: GenMessage<InstanceStats_DatabaseStats> = /*@__PURE__*/
+  messageDesc(file_api_v1_instance_service, 7, 0);
+
 /**
  * @generated from service memos.api.v1.InstanceService
  */
@@ -835,6 +911,16 @@ export const InstanceService: GenService<{
     input: typeof TestInstanceEmailSettingRequestSchema;
     output: typeof EmptySchema;
   },
+  /**
+   * GetInstanceStats returns resource usage statistics for the instance. Admin only.
+   *
+   * @generated from rpc memos.api.v1.InstanceService.GetInstanceStats
+   */
+  getInstanceStats: {
+    methodKind: "unary";
+    input: typeof GetInstanceStatsRequestSchema;
+    output: typeof InstanceStatsSchema;
+  },
 }> = /*@__PURE__*/
   serviceDesc(file_api_v1_instance_service, 0);