diff --git a/kernel/mobile/kernel.go b/kernel/mobile/kernel.go
index 6278a0b22..900238fcf 100644
--- a/kernel/mobile/kernel.go
+++ b/kernel/mobile/kernel.go
@@ -98,6 +98,10 @@ func GetAssetAbsPath(asset string) (ret string) {
 	return
 }
 
+func GetMimeTypeByExt(ext string) string {
+	return util.GetMimeTypeByExt(ext)
+}
+
 func SetTimezone(container, appDir, timezoneID string) {
 	if "ios" == container {
 		os.Setenv("ZONEINFO", filepath.Join(appDir, "app", "zoneinfo.zip"))
diff --git a/kernel/model/repository.go b/kernel/model/repository.go
index f2d646214..aa8f3ec75 100644
--- a/kernel/model/repository.go
+++ b/kernel/model/repository.go
@@ -153,7 +153,7 @@ func OpenRepoSnapshotDoc(fileID string) (title, content string, displayInText bo
 		displayInText = true
 		title = path.Base(file.Path)
 
-		if mimeType := mime.TypeByExtension(filepath.Ext(file.Path)); strings.HasPrefix(mimeType, "text/") {
+		if mimeType := mime.TypeByExtension(filepath.Ext(file.Path)); strings.HasPrefix(mimeType, "text/") || strings.Contains(mimeType, "json") {
 			// 如果是文本文件，直接返回文本内容
 			// All plain text formats are supported when comparing data snapshots https://github.com/siyuan-note/siyuan/issues/12975
 			content = gulu.Str.FromBytes(data)
diff --git a/kernel/util/file.go b/kernel/util/file.go
index 560c62d90..3aab9852d 100644
--- a/kernel/util/file.go
+++ b/kernel/util/file.go
@@ -20,6 +20,7 @@ import (
 	"bytes"
 	"io"
 	"io/fs"
+	"mime"
 	"os"
 	"path"
 	"path/filepath"
@@ -29,6 +30,7 @@ import (
 
 	"github.com/88250/gulu"
 	"github.com/88250/lute/ast"
+	"github.com/gabriel-vasile/mimetype"
 	"github.com/siyuan-note/filelock"
 	"github.com/siyuan-note/logging"
 )
@@ -73,6 +75,21 @@ func GetUniqueFilename(filePath string) string {
 	}
 }
 
+func GetMimeTypeByExt(filePath string) (ret string) {
+	ret = mime.TypeByExtension(filepath.Ext(filePath))
+	if "" == ret {
+		m, err := mimetype.DetectFile(filePath)
+		if err != nil {
+			logging.LogErrorf("detect mime type of [%s] failed: %s", filePath, err)
+			return
+		}
+		if nil != m {
+			ret = m.String()
+		}
+	}
+	return
+}
+
 func IsSymlinkPath(absPath string) bool {
 	fi, err := os.Lstat(absPath)
 	if err != nil {