Just JSON is a minimal yet powerful Chrome extension for formatting and comparing JSON effortlessly.
Whether you're debugging APIs, validating responses, or diffing JSON data side-by-side — Just JSON helps you do it, fast and distraction-free.
-
🔍 JSON Formatter
Paste raw JSON and prettify it with one click. -
⚖️ JSON Compare
Compare two JSON blobs side-by-side. Differences are highlighted line-by-line. -
🌙 Dark Mode
Toggle between light and dark themes for better readability. -
📋 Copy to Clipboard & Download
Instantly copy or save formatted JSON. -
🧠 Line Numbers + Diff Highlighting
See each line clearly with differences marked in color.
You can install Just JSON directly from the Chrome Web Store:
🔗 Just JSON on Chrome Web Store
If you want to run or modify the extension locally:
- Clone or download this repository.
- Open
chrome://extensions/in your browser. - Enable Developer Mode (top right).
- Click “Load unpacked” and select this project folder.
Just JSON does not collect or store any personal data.
All formatting and comparison happens locally in your browser.
We don’t use cookies, analytics, or external APIs.
This project is licensed under the MIT License.
This project is made possible by the wonderful contributions from our community. See our full list of Contributors here