diff --git a/modules/structs/repo_file.go b/modules/structs/repo_file.go
index 5e8bc3c..5059a17 100644
--- a/modules/structs/repo_file.go
+++ b/modules/structs/repo_file.go
@@ -22,6 +22,7 @@ type BatchFileResponse struct {
 
 type ContentsResponse struct {
 	*gitea_api.ContentsResponse
+	IsTextFile   bool                   `json:"is_text_file"`
 	LatestCommit ContentsResponseCommit `json:"latest_commit"`
 }
 
diff --git a/services/repository/files/content.go b/services/repository/files/content.go
index a92262f..0705b20 100644
--- a/services/repository/files/content.go
+++ b/services/repository/files/content.go
@@ -11,6 +11,7 @@ import (
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/modules/git"
 	gitea_api "code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/modules/typesniffer"
 	"code.gitea.io/gitea/modules/util"
 	gitea_files_service "code.gitea.io/gitea/services/repository/files"
 	hat_api "code.gitlink.org.cn/Gitlink/gitea_hat.git/modules/structs"
@@ -134,6 +135,21 @@ func GetContents(ctx context.Context, repo *repo_model.Repository, treePath, ref
 		return nil, err
 	}
 
+	blob, err := gitRepo.GetBlob(entry.ID.String())
+	if err != nil {
+		return nil, err
+	}
+	dataRc, err := blob.DataAsync()
+	if err != nil {
+		return nil, err
+	}
+	buf := make([]byte, 1024)
+	n, _ := util.ReadAtMost(dataRc, buf)
+	buf = buf[:n]
+
+	st := typesniffer.DetectContentType(buf)
+	isTextFile := st.IsText()
+
 	contentsResponse := &hat_api.ContentsResponse{
 		ContentsResponse: &gitea_api.ContentsResponse{
 			Name:          entry.Name(),
@@ -146,6 +162,7 @@ func GetContents(ctx context.Context, repo *repo_model.Repository, treePath, ref
 				Self: &selfURLString,
 			},
 		},
+		IsTextFile: isTextFile,
 		LatestCommit: hat_api.ContentsResponseCommit{
 			Message:   lastCommit.CommitMessage,
 			Sha:       lastCommit.ID.String(),