JSON Formatter icon

JSON Formatter

Extension Actions

CRX ID
bcjindcccaagfpapjjmafapmmgkkhgoa
Status
  • Extension status: Featured
Description from extension meta

Makes JSON easy to read. Open source.

Image from store
JSON Formatter
Description from store

The original JSON Formatter, now with optional dark mode 🌚

Auto-formats JSON when you load it in a browser tab.

FEATURES

- Fast, even on very long JSON pages
- Dark mode
- Syntax highlighting
- Collapsible trees, with indent guides
- Clickable URLs
- Negligible performance impact on non-JSON pages (less than 1 millisecond)
- Works on any valid JSON page – URL doesn't matter
- Buttons for toggling between raw and parsed JSON
- FIXED: Exports the parsed JSON to window.json so you can explore it in Dev Tools

Note: this extension might clash with other browser extensions that modify the DOM before it runs. If it doesn't seem to be working, try disabling other extensions. If it clashes with an extension you need, open an issue and I'll try to find a solution.

SOME EXAMPLE JSON PAGES to try it out on:
https://callumlocke.github.io/json-formatter/

PRO TIP
Hold down control (or cmd on Mac) while collapsing a tree - collapses all siblings too.

PRIVACY
No tracking, no advertising, and nothing else nefarious.

SOURCE CODE
github.com/callumlocke/json-formatter

ISSUES
github.com/callumlocke/json-formatter/issues

WHO MADE THIS
twitter.com/callumlocke

Latest reviews

Amol Patil
this is simple json not working on all page Best and all features include Json Viewer Pro by Patilweb https://chromewebstore.google.com/detail/json-viewer-pro-by-patilw/incoinbbbgipfabmmaldmhllgbfndhpa
Sam Louloudis
anyone giving this 1 star is experiencing skill issue
Ferdinand “FrendzNMap0911” Olazo
high recommendable for everyone...two thumbs up..
Kiki Nikola
great extension for json ty so much !!!
Elijah
Json formatter is not working, I've tried uninstalling it and re-installing, but I've failed
Abu Raihan
it's very helpful for me. i can not think of viewing JSON from API without this extension
Ali.S
Nice and simple view for JSON, but huge memory use and hanging with big JSON text
Nenad Jankovic Paske
scam
Sm Shohag
Dark theme/White Theme activation not working! fix this bug. Thanks
Duy Sơn Nguyễn
cannot activate dark theme
Henrik Jensen
This is perfect :) you see everything
Sirial Kilorean
Life saver!
Heechan Park
I can't live without it.
Will Izaksorta
LOVE IT!
Omais Mobi
If only it showed the line number then it would be perfect
Dhananjayan Sudhakar
Truly Amazing app! Love it
Vik Lost Stranger
Lacks guidance on how to use it to read Chat GPT or Google takeout backups in browser in readable format or convert it to HTML readable format or txt. Bad.
Alexander Gerber
Great tool, highly recommend!
Miiro Lernokil
helpfull for anyone who tries to read JSON
Kikos Moktaki
A must for developers
James Mordaki
Very helpfull!!!
Jane Kikorl
I love it
Modi
Helpfull and great
// ANT //
AMAZING
Kyle Broflo
Just Awsome
Jarod Nienow
Just great!
Sahil Atahar
It works very well. Its amazing
Lynia Uth
very nice its sure help understanding certain issues i do love the options
Choudhary Abdullah
Simple & sufficient! Using it along with SuperDev Pro.
Jordan “gordo” Zanatta
Works beautifully.
Wilhelm Mauch
works perfect. thank you
Devneel Vaidya
Doesn't work - the built-in pretty print from Chrome seems to conflict with this. Will update to 5 stars once fixed.
Jeysson Ramirez
Works perfect
Zobaidul Kazi
The JSON Formatter by Callum Locke is an indispensable tool for anyone working with JSON data. It effortlessly transforms messy JSON strings into a beautifully formatted and easy-to-read structure, saving developers significant time and effort. The tool is intuitive, lightning-fast, and perfect for debugging or simply making JSON more readable. Whether you're dealing with large data sets or just need a quick format check, this tool is a must-have. Highly recommended for developers who regularly handle JSON data!
Andrzej Kociuba
Works immediately after installing - no need to configure anything. Good job!
David Wilkie
Good, but theme (in options) doesn't work, so no way to choose dark mode. An editable stylesheet would be good too as the font size and line spacing is a little too large for my liking.
Gintas Poc.
Awesome tool, works great! It would be nice to have an option to select text colors on our own.
Joseph Stone
Cant help but notice that mr. 1 star hasnt updated his review. not cool bruh, not cool.
Nasib Zada
The chrome's built-in pretty print toggle conflicts with this. My suggestion would be to have some padding at the top so the chrome's pretty print stripe does not overlap the contents of the json. The 1 star is just to catch your attention, i'll surely update it to 5 when you do this urgent update.
Mariusz Stępień
Chrome now has a "Pretty-print" option that overlaps with this extension. Please fix
Jun Zhu
This extension is only good for small JSON file, loading forever while I tried to load a large JSON response.
amit perane
Dude not working on long JSON response!
Gideon McPhetrige
Works so naturally that I forget it's not just a part of Chrome. Great stuff!
Jens Schendel
Simple and useful noch only during development. No idea why this is an extension not a built-in feature.
Naufal Assyafiq
thanks, this very useful
Muhammad Ahmed Fayyaz (Zack Knight)
Awesome
Father Ghh
nice ...
Flavor Hub
Great extension! ❤️❤️‍🔥🔥🔥
Paweł Komorowski
Super!
saad el
very useful