JSON Viewer & Formatter — Big Files, Tree & Search

by smolkapps@gmail.com · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

Open, format & explore huge JSON fast. Collapsible tree, instant search, highlighting. 100% local & private.

Users

−1 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#265K

#221K among extensions

Version

0.1.0

updated 1 Sep 2026

Users

monthly, 2 months

Latest, 16 Oct 2026: 4 usersMove the mouse over the chart for any month

Ratings count

monthly, 2 months

Latest, 16 Oct 2026: 1 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 JSON Viewer & Formatter — Big Files, Tree & Search

Tired of your browser or DevTools choking on a big JSON response? This is a fast, no-nonsense JSON viewer built to stay smooth on files that make other tools freeze. • Format & beautify any JSON — click the toolbar icon on a page showing raw JSON, or paste it / open a .json file. • Built for big files — the tree loads in chunks, so megabytes of JSON open instantly instead of hanging the page. • Instant search across keys and values, jumping straight to matches. • Syntax highlighting by type, expand/collapse, and one-click copy of pretty or minified JSON. • 100% local & private — your JSON never leaves your browser. No accounts, no servers, no tracking. The extension reads a page only when you click its icon. No clutter, no ads, no sign-up. Open your JSON and read it. Coming soon: jq-style query, JSON diff, schema inference, and CSV/table export.