JSON Inspector — JSON Viewer & Formatter

See any JSON page as a collapsible tree — syntax highlighting, copy path and copy value. No tracking, no data collected.

Your browser shows raw JSON as a wall of text. JSON Inspector turns it into a tree: one click, and any JSON page or API response becomes a collapsible, syntax-highlighted view you can actually read. WHAT IT DOES • View JSON as a collapsible tree — expand and collapse objects and arrays, with counts shown on collapsed items • Copy property paths — hover any value and copy its path (data.items[3].id), ready to paste into your code • Copy values — grab a single field, or the whole document pretty-printed • Stays fast on huge responses — the tree renders as you expand it, so multi-megabyte API payloads open without freezing the tab • Dark mode — follows your system theme automatically • Works on API responses, JSON files, and JSON served as plain text — including responses with anti-hijacking prefixes HOW TO USE 1. Open any URL that returns JSON 2. Click the JSON Inspector button in your toolbar 3. Explore — expand, collapse, copy paths and values Click the button again (or press Esc) to close it and see the raw text. PRIVACY Collects nothing. No account, no analytics, no tracking, no ads. The extension cannot read any page until you click its button on that page — it asks for no website access at all, stores nothing, and makes no network requests. Everything happens locally in your browser. Built for developers, API integrators, and QA engineers who live in JSON endpoints. If a page isn't JSON, it says so instead of guessing. Questions or ideas: https://yonasol.com/ext/json-inspector/