{ }

JSON Formatter

Format, validate, repair and explore JSON — entirely in your browser.

● Nothing is uploaded — runs 100% locally

Indent Sort keys

Session history

Kept in memory only — this list empties when the page is reloaded. Turn tracking off in Settings.

Settings

Remember last input across visits Kept only in this browser’s local storage — never sent anywhere. Turning this off deletes the saved copy immediately. Track session history Keeps an in-memory list of documents you format so you can reopen them. Cleared automatically when the page reloads; never stored.

Input paste, type, or drop a file

Everything runs in your browser — your JSON never leaves your machine (this page makes no network requests with your data, and works offline once loaded). Your last input is remembered in this browser’s local storage and this session’s documents in an in-memory History — both controllable under ⚙ Settings. A free tool by Cordrey Labs.