JSON Surgeon — Format, Diff, Convert & Query JSON

by ashish.22042014@gmail.com · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

The power-user JSON tool. Auto-format in tabs, diff side-by-side, convert to YAML/TypeScript/CSV, query with JSONPath. Free + Pro.

Users

−1 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#277K

#230K among extensions

Version

1.0.0

updated 4 Mar 2026

Users

monthly, 8 months

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

Ratings count

monthly, 8 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 Surgeon — Format, Diff, Convert & Query JSON

JSON Surgeon is the power-user JSON toolkit built for developers. Works automatically on any JSON URL - no copy-pasting required. ─── FREE FEATURES ─────────────────────── ✦ Auto-format JSON browser tabs - visit any JSON URL and it's instantly rendered as a beautiful, interactive tree ✦ Collapsible tree view with syntax highlighting ✦ Copy any value or key path with one click ✦ Minify & format JSON in the popup ✦ Dark / light / system theme ✦ Right-click → Format selected JSON on any page ─── PRO FEATURES ($2.99/mo or $9.99/yr) ─ ✦ Side-by-side JSON Diff - spot exactly what changed ✦ TypeScript Interface Generator - paste JSON, get types instantly ✦ Format Converter - convert JSON ↔ YAML, TOML, CSV ✦ JSONPath Query Builder - filter and extract with live results ✦ JSON Schema Validator - validate against any schema ✦ Persistent Scratchpad - multi-tab workspace that survives browser restarts ─── PRIVACY ───────────────────────────── All processing happens locally in your browser. Your JSON never leaves your machine. No tracking. No ads. ─── PERFECT FOR ───────────────────────── • API developers inspecting responses • Frontend engineers debugging payloads • DevOps / backend engineers reviewing configs • Anyone who works with JSON daily Built by a principal software engineer. Actively maintained.