Powerful Developer Toolbox

Dinh Quang Trung

    • 4.2 • 19 Ratings
    • Free
    • Offers In-App Purchases



A must-have tool for all developers. Download now.


This is a PAID app and requires a subscription to use all the premium features.

The app is NOT FREE. If you are expecting a free app, please don't install it. Thank you!


List of current tools:

- Unix Time Converter
- JSON Format/Validate
- Base64 String Encode/Decode
- Base64 Image Encode/Decode
- JWT Debugger
- RegExp Tester
- URL Encode/Decode
- URL Parser
- HTML Entity Encode/Decode
- Backslash Escape/Unescape
- UUID/ULID Generate/Decode
- HTML Preview
- Text Diff Checker
- Number Base Converter
- HTML Beautify/Minify
- CSS Beautify/Minify
- JS Beautify/Minify
- ERB Beautify/Minify
- LESS Beautify/Minify
- SCSS Beautify/Minify
- XML Beautify/Minify
- Lorem Ipsum Generator
- QR Code Reader/Generator
- String Inspector
- Hash Generator
- Markdown Preview
- SQL Formatter
- String Case Converter
- Cron Job Parser
- Color Converter
- PHP Serializer
- PHP Unserializer
- Random String Generator
- SVG to CSS
- cURL to Code
- ...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.

Terms of Service:

What’s New

Version 1.15.0

◆ New tools

- Added cURL to Code tool. Comes in 15 languages: JavaScript, NodeJS, Go, Java, Python, Rust, etc.
- Added SVG to CSS tool. Easily convert your SVG to CSS background-image property. Support URL Encoded version and Base64 encoded version.

◆ New features

- You can now open multiple DevUtils windows with ⌘N or right-click on the tool in the sidebar → Open in New Window.
- Added Cheat Sheet to the RegExp Tester tool.
- Added Separating Group Size to the Random String Generator tool. This will enable you to generate more flexible strings like license keys.

◆ Improvements

- Added "Preserve encoded strings" to the JSON Formatter tool.
- JWT Debugger now automatically removes spaces and newlines characters in the input token.
- Added License Key preset to the Random String Generator tool.
- When you click "Use as input" in various encode/decode tools, the Encode option swaps to Decode automatically (and vice versa).

◆ Fixed

- Fixed a number format issue in the Color Converter tool.
- Fixed auto-detect behavior: if no matching tool is detected, the app now shows the previously selected tool.
- Fixed DevUtils's menu bar icon not showing correctly on external screens.
- Fixed the group setting gear icon not clickable when the sidebar is too wide.
- Fixed "Check for Updates..." menu item incorrectly disabled in the status bar menu.

◆ Other Changes

- Change the website address from to in various places in the app.
- Rename "Delete" to "Ungroup" in the group menu items.
- The fuzzy search option in the Preferences... panel is removed.

Ratings and Reviews

4.2 out of 5
19 Ratings

19 Ratings

DamianMehers ,

Constantly open

A fantastic tool which saves me from having to remember a myriad web sites, and pasting text into sites of dubious origin.

I have this tool constantly open and am using it all the time. Developer is friendly and open to suggestions.

If you are a developer you need this tool.

Calendee ,

Indispensable Tool for Developers

• Have untidy HTML, JSON, etc? Use DevUtils

• Need to validate a JWT? Use DevUtils

• Need to test a Regex? Use DevUtils

• Need to diff some text? Use DevUtils

• Need to ....? Use DevUtils

This app has everything a dev needs to do quick tasks to increase their productivity.

Even better, the developer is online, responsive, and open to suggestions.

I highly recommend this app. It's definitely worth the small price.

David_FOS ,

Use it Every Day

This colleciton of tools is so handy. I use it every day. It's so nice to know that the data is staying on my machine!

Highly recommended.

App Privacy

The developer, Dinh Quang Trung, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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