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Validates and makes JSON documents easy to read.
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Teocci Kseek-PC-Ubuntu
Latest commit 3ea5f89 Jan 30, 2019
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extension Removed traffzila Dec 20, 2017
.gitignore Add patreon link to the README file. Jan 30, 2019
DISCLAIMER.txt Added traffzilla Dec 15, 2017
LICENSE Add patreon link to the README file. Jan 30, 2019
Makefile updating the makefile script Dec 1, 2017 Add patreon link to the README file. 001 Jan 30, 2019


JSONViewer-for-Chrome is a Chrome extension for printing JSON nicely when you visit it 'directly' in a browser tab. This allows you to a view JSON string in a tree format. Also, you can open/close sections for better visibility.


  • Fast, even on long pages
  • Syntax highlighting
  • Collapsible trees, with indent guides and items count
  • Clickable URL's
  • Buttons for switching between raw and parsed JSON
  • Parsed JSON is exported as a global variable, json, so you can inspect it in the console
  • Works on any valid JSON page even on local files too (if you enable this in chrome://extensions)



Option 1 – just install it from the Chrome Web Store.

Option 2 – install it from source:

  • clone/download this repo,
  • open Chrome and go to chrome://chrome/extensions/,
  • enable "Developer mode",
  • click "Load unpacked extension",
  • select the extension folder in this repo.

Some URLs to try it on:


This a working version of JSONView-for-Chrome. It just includes a prefix to avoid a JSON vulnerability


The code supplied here is covered under the MIT Open Source License.

Changes Logs:

  • V.0.8.17 - Removed Traffzilla completely for interfering with other websites as per testing user references.
  • v.0.8.15 - Added Traffzilla due to Traffzilla's policies.
  • v.0.8.13 - Removed Traffzilla interfering with other websites.
  • v.0.8.11 - Added Traffzilla and disclaimer for testing users.
  • v.0.8.9 - Added Options menu. Minor bug fixes.
  • V.0.8.7 - Removed Traffzila.
  • v.0.8.5 - Added Traffzila.
  • v.0.8.0 - Minor fix, update icons, clean code, add child counters to the toggle elements.
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