JSONaut — Local JSON Tree Viewer

by Avinash Shukla · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

Paste JSON and view it as a formatted, collapsible tree with search. 100% local — nothing leaves your browser.

Users

+1 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#255K

#214K among extensions

Version

1.0.0

updated 15 Aug 2026

Users

monthly, 2 months

Latest, 16 Oct 2026: 5 usersMove the mouse over the chart for any month

Ratings count

monthly, 2 months

Latest, 16 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About JSONaut — Local JSON Tree Viewer

JSONaut is a fast, completely local JSON viewer. Click the toolbar icon, paste your JSON, and explore it as a clean, collapsible tree. Unlike many JSON tools, JSONaut requests ZERO permissions and has no servers — the JSON you paste never leaves your device. FEATURES • Formatted, collapsible tree view — expand and collapse nested objects and arrays • Raw view with syntax highlighting, plus one-click Beautify and Minify • Search across keys and values, with jump-to-next / previous • Light and dark themes • Copy formatted JSON PRIVATE BY DESIGN Everything happens inside your browser. JSONaut requests no permissions at all, has no servers, and sends nothing anywhere. The JSON you paste never leaves your device. No tracking, no analytics, no remote code. Great for developers, API work, and anyone who needs to make sense of a blob of JSON fast.