JSON Formatter Firefox

JSON Formatter

Formats JSON automatically! Open Source, Available with 60+ Themes, Syntax Highlighting, automatically linkifies links and more.

Features & Capabilities

JSON Formatter for Chrome automatically formats JSON with syntax highlighting and 60+ themes. It supports multiple viewing modes (Parsed, Formatted Raw, and Raw) and automatically linkifies URLs for easy navigation.

This open-source extension works offline, respects privacy with no tracking, and offers customizable extension settings and keyboard shortcuts. It adapts to your browser theme and supports local files and Incognito mode.

User Growth & Download Statistics

By:
Arnav Kumar
Daily users:
3,465 31
Rating:
5.00
(5)
Version:
2.1.18 Last updated: 2026-03-11
Version code:
6178511
Creation date:
2023-03-27
Risk:
Moderate risk impact Moderate risk likelihood
Permissions:
Host permissions:
  • *://*/*
  • <all_urls>
Content scripts matches:
  • <all_urls>
Size:
111.51KB
Email:
js*****@googlegroups.com
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-16
Compare stats and ranking:

Other platforms

Chrome
JSON Formatter (vv2.2.0)
40,000 4.41 (44)
Edge
JSON Formatter (vv2.2.0)
12,441 4.70 (10)

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Arnav Kumar
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/json_formatter/
Email:
js*****@googlegroups.com
Website:
https://json-formatter.js.org/

Publisher Change History

2026-02-25: ar*****@outlook.com to jf*****@gmail.com

2026-04-07: jf*****@gmail.com to js*****@googlegroups.com

Upgrade to see full email

Permission Change History

2026-02-25: Version 2.0.3.0 → 2.1.15
Add Host permissions: *://*/* <all_urls>
Remove Permissions: *://*/* <all_urls>

User Reviews

Awesome extension! Formats my JSONs beautifully, lots of different styles to choose from
by la*****, 2026-03-02

by 退出*****, 2025-03-27

by 远离*****, 2025-02-12
View all user reviews ›

Is JSON Formatter Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

JSON Formatter requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

JSON Formatter is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has recently changed publisher email (might be a transfer in ownership)
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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