List of current tools:

- Unix Time Converter
- URL Encoder/Decoder
- JSON Formatter/Validator
- JWT Debugger
- Base64 Encoder/Decoder
- Query String Parser
- HTML Entity Encoder/Decoder
- Backslash Escaper/Unescaper
- UUID Generator/Decoder
- HTML Preview
- Text Diff Checker
- HTML Beautifier/Minifier
- CSS Beautifier/Minifier
- JS Beautifier/Minifier
- XML Beautifier/Minifier
- ...more are coming!

◆ Work Offline

Stop pasting your JSON strings, JWT tokens, or any potentially sensitive data to random websites online. helps you quickly do your tiny tasks entirely offline! Everything you paste into the app never leaves your machine.

◆ Smart detection

DevUtils automatically selects the right tool based on your clipboard content. Activate the app anytime by:

- Copy text ► Press ⌃⌥⌘Space (Or your own customized hotkey, up to you)
- Copy text ► Click to the app icon in the status bar
- Select text ► Right-click ► "Inspect in" (This menu appears after you install the app)

All options are configurable in the Preferences panel!

◆ Feature rich

Many developer tools are supported, and more are coming. Scripting ability is coming soon so you can add your own tools/scripts.

Suggest your favorite tools by dropping me an email at or send your own PR via GitHub.

What’s New

Version 1.4.1

New feature: You can now re-order the tools in the list by dragging the tool name! If you need to re-order the whole list back to default, go to DevUtils Menu > Tools > Sort Order > Default.
JSON Formatter/Validator now allows you to enable/disable trailing commas and comments in the JSON string. Click the gear icon in the tool to configure this.
Text Diff Checker now shows the number of diffs in the result text view. You can also navigate to the diffs with the forward/backward navigation buttons.

Ratings and Reviews

5.0 out of 5
2 Ratings

2 Ratings


Trung Dinh Quang
11.2 MB

OS X 10.11 or later, 64-bit processor



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.