JSON Formatter

JSON Formatter

Makes JSON easy to read. Open source.

JSON Formatter promo image
What is JSON Formatter?

JSON Formatter is an open-source Chrome extension that makes JSON and JSONP easy to read. It comes with several features including syntax highlighting with multiple themes, collapsible trees with indent guides and line numbers. It also offers clickable URLs and allows you to toggle between raw and parsed JSON. The extension works on any valid JSON page, and even on local files once enabled from chrome://extensions. Furthermore, you can inspect the JSON simply by typing 'json' in the console. The source code can be found at github.com/nikrolls/json-formatter.

Rating: 4.34 (64)
Version: 0.10.0 (Last updated: 2017-05-08)
Creation date: 2017-05-08
Risk impact: High risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
  • storage
  • *://*/*
  • <all_urls>
Size: 41.88K
URLs: Website
Stats date:

Other platforms

Not available on Firefox
Not available on Edge

Makes JSON easy to read. Open source. A fork of the original (no-longer updated) extension by Callum Locke.

FEATURES • JSON & JSONP support • Syntax highlighting with 36 light and dark themes • Collapsible trees, with indent guides • Line numbers • Clickable URLs • Toggle between raw and parsed JSON • Works on any valid JSON page – URL doesn't matter • Works on local files too (if you enable this in chrome://extensions) • You can inspect the JSON by typing "json" in the console

(Note: this extension might clash with other JSON highlighters/beautifiers, like ‘JSONView’, ‘Pretty JSON’ or ‘Sight’ – disable those before trying this.)

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User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Works with both formatted and raw data
  • Includes themes for customization
  • Actively being developed on GitHub
  • Simple and easy to use
  • Does not work with newer versions of Chrome
  • Not always able to format JSON
  • Issues with line numbering
  • Toggles between raw and parsed when switching desktops
  • Does not maintain formatting when copying and pasting output
Most mentioned
  • Issues with updates
  • Ability to work with local files
  • Provides themes
  • Ease of use
  • Difficulty formatting local JSON files
View all user reviews
Risk impact

JSON Formatter is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this extension. Review carefully before installing. We recommend that you only install JSON Formatter if you trust the publisher.

Risk likelihood

JSON Formatter has earned a fairly good reputation and likely can be trusted.

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