Fast JSON viewer - highlights, shows items count/size, handles large files

What is JSON Lite?
JSON Lite is a Chrome extension designed for fast and efficient JSON viewing. Capable of formatting JSON or JSONP responses and clipboard items, it offers readability features like collapsible arrays, objects, and values. Users can count items and properties in a collection, view collection sizes, and even manage large or invalid JSON files. The extension ensures the authenticity of numeric keys and large numbers by avoiding sorting or rounding. It also allows users to save the original JSON document and select/copy workable JSON from the formatted output.
Users: 10,000+
Rating: 4.86 (50)
Version: 23.5.0 (Last updated: 2023-05-20)
Creation date: 2019-06-18
Risk impact: High risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 3
  • contextMenus
  • storage
  • activeTab
  • tabs
  • scripting
Host permissions:
  • <all_urls>
Size: 22.34K
URLs: Website
Stats date:

Other platforms

JSON Lite (v21.3.0)
4.49 (100) 15,051+
Not available on Edge
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  • Format JSON/JSONP responses and clipboard
  • Select and format/encode/decode text on every page
  • Collapsible arrays, objects and long values
  • Collapse all childs with Ctrl(Command) + Click
  • Collapse property also on all sibling items with Alt(Option) + Click
  • Count items and properties in a collection
  • Show collection sizes
  • Do its best to show large (10MB+) JSON files
  • Do its best to show invalid JSON files
  • Do not sort objects with numeric keys
  • Do not round large numbers
  • "Save as..." saves the original JSON document
  • Select and copy a working JSON from the formatted JSON
See more
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 Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Fast and lightweight
  • Customizable themes
  • Efficient memory allocation
  • Supports *.geojson files
  • Handles large JSON files well
  • Not working after Google Chrome update v. 117
  • Lack of fold-all option for complex JSON files
  • Missing functionality to display response status codes
Most mentioned
  • Fast and very useful
  • Customizable themes
  • Efficient memory allocation
  • Supports large JSON files
  • Works well with *.geojson files
Recent reviews
The automatic unix timestamp to date display is very helpful.
by A Google user, 2019-02-05

Best JSON formatter for chrome.
by A Google user, 2018-12-02

I've been looking for this extension for a few years. I've used other JSON viewers/formatters and they've all been incredibly slow especially when hiding/revealing branches. I deal with large JSON datasets at my job and this plugin is easily the quickest of all that I have tried. Great job!
by A Google user, 2019-02-21
View all user reviews
Risk impact

JSON Lite 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 Lite if you trust the publisher.

Risk likelihood

JSON Lite has earned a good reputation and can be trusted.

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