Powerful Developer Toolbox

Dinh Quang Trung

    • 4.4 • 27 Ratings
    • Free
    • Offers In-App Purchases



The free version includes 3 tools:

- Unix Time Converter (+ Timezone support)
- JSON Format/Validate
- Base64 String Encode/Decode

List of all 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
- JSON to Code
- Certificate Decoder (X.509)
- Hex to ASCII
- ASCII to Hex
- Line Sort/Dedupe
- ...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 1.17.0

- Added Hex ⇄ ASCII string converter tools.
- Added Line Sort/Dedupe tool: You can reorder a string with multiple lines and remove duplicates easily.
- Hash Generator Tool: Added Keccak-256 algorithm (used in blockchain development).
- Improved Unix Time Converter: the input will now automatically remove formatting characters (i.e., commas) for more convenience.
- Fixed various small UI bugs.

Ratings and Reviews

4.4 out of 5
27 Ratings

27 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.

AppAndApp ,

Always ready!

I have used this app since about a year, it comes handy at least once a week, so it paid for itself instantly if i count the time saved. I use the json formater all the time, that just got improved in the latest release. I also use the various features such as escape/unescape and i find each time new features coming handy just by remembering seeing them around and where to find it without thinking much.

Lots of good simple UI design, including detecting what was already copied to save a few keystrokes any time possible. Great for anyone dealing with code, any kind of code or language almost. Kudos.

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

More By This Developer