diff --git a/app/helpers/repositories_helper.rb b/app/helpers/repositories_helper.rb
index 10ad1377e..07646c07a 100644
--- a/app/helpers/repositories_helper.rb
+++ b/app/helpers/repositories_helper.rb
@@ -11,7 +11,7 @@ module RepositoriesHelper
   end
 
   def download_type(str)
-    default_type = %w(xlsx xls ppt pptx pdf zip 7z rar exe pdb obj idb png jpg gif tif psd svg RData rdata doc docx mpp vsdx)
+    default_type = %w(xlsx xls ppt pptx pdf zip 7z rar exe pdb obj idb png jpg gif tif psd svg RData rdata doc docx mpp vsdx dot)
     default_type.include?(str&.downcase)
   end
 
@@ -20,8 +20,8 @@ module RepositoriesHelper
     default_type.include?(str&.downcase)
   end
 
-  def is_readme_type?(str)
-    return false if str.blank?
+  def is_readme?(type, str)
+    return false if type != 'file' || str.blank?
     readme_types = ["readme.md", "readme", "readme_en.md", "readme_zh.md", "readme_en", "readme_zh"]
     readme_types.include?(str.to_s.downcase)
   end
@@ -72,4 +72,15 @@ module RepositoriesHelper
   def render_format_time_with_date(date)
     date.to_time.strftime("%Y-%m-%d %H:%M")
   end
+
+  def decode64_content(entry, owner, repo, ref, path=nil)
+    if is_readme?(entry['type'], entry['name'])
+      content = Gitea::Repository::Entries::GetService.call(owner, repo.identifier, entry['path'], ref: ref)['content']
+      readme_render_decode64_content(content, path)
+    else
+      file_type = entry['name'].to_s.split(".").last
+      return entry['content'] if download_type(file_type)
+      render_decode64_content(entry['content'])
+    end
+  end
 end
diff --git a/app/views/repositories/_simple_entry.json.jbuilder b/app/views/repositories/_simple_entry.json.jbuilder
index ab9910dd1..1e8e001af 100644
--- a/app/views/repositories/_simple_entry.json.jbuilder
+++ b/app/views/repositories/_simple_entry.json.jbuilder
@@ -8,12 +8,13 @@ if @project.forge?
   json.path entry['path']
   json.type entry['type']
   json.size entry['size']
-  json.content entry['content'].present? && !direct_download ? render_decode64_content(entry['content']) : ""
+
+  json.content decode64_content(entry, @owner, @repository, @ref)
   json.target entry['target']
   json.download_url entry['download_url']
   json.direct_download direct_download
   json.image_type image_type
-  json.is_readme_file is_readme_type?(file_name)
+  json.is_readme_file is_readme?(entry['type'], entry['name'])
   if entry['latest_commit']
     if entry['type'] != 'file'
       json.partial! 'last_commit', entry: entry
diff --git a/app/views/repositories/entries.json.jbuilder b/app/views/repositories/entries.json.jbuilder
index 20fecec32..ca041fd53 100644
--- a/app/views/repositories/entries.json.jbuilder
+++ b/app/views/repositories/entries.json.jbuilder
@@ -51,17 +51,8 @@ if @project.forge?
       json.sha entry['sha']
       json.type entry['type']
       json.size entry['size']
-      content =
-        if is_readme_type?(entry['name'])
-          is_readme_file = true
-          content = Gitea::Repository::Entries::GetService.call(@owner, @project.identifier, entry['name'], ref: @ref)['content']
-          readme_render_decode64_content(content, @path)
-        else
-          is_readme_file = false
-          entry['content']
-        end
-      json.is_readme_file is_readme_file
-      json.content content
+      json.is_readme_file is_readme?(entry['type'], entry['name'])
+      json.content decode64_content(entry, @owner, @repository, @ref, @path)
       json.target entry['target']
       if entry['latest_commit']
         json.partial! 'last_commit', entry: entry