JSON Formatter

by BuilderX · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

Format, minify, and validate JSON instantly — private, offline, no tabs.

Users

0 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#255K

#213K among extensions

Version

1.0.0

updated 27 Jul 2026

Users

monthly, 3 months

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

Ratings count

monthly, 3 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 JSON Formatter

JSON Formatter helps you format, minify, validate, and explore JSON without opening another website. Features: • Pretty-print JSON with 2 or 4 space indent • Minify JSON for compact output • Validate JSON with clear error messages • Collapsible tree view — expand/collapse every {} and [] • Copy result in one click • Paste and auto-format • Right-click selected text → “Format JSON” • Keyboard shortcut: Ctrl+Shift+J (⌘+Shift+J on Mac) Privacy: All formatting happens locally in your browser. Your JSON is not sent to a server. How to use: 1. Click the extension icon to open the side panel 2. Paste JSON into Input 3. Click Format, Minify, or Validate 4. Copy the result when ready Optional: select JSON on any page, right-click, and choose “Format JSON”.