JSON Formatter & Validator
Format, prettify, minify, and validate JSON data instantly. Clean syntax highlighting, error detection, and easy clipboard copy.
Cet outil s’exécute dans le navigateur. Noms et étapes sont localisés ; l’interface interactive est la même dans toutes les langues.
How to Use
- Paste the JSON (or a minified API response).
- Click format to pretty-print, or minify to compact it.
- If validation fails, read the parse error — a trailing comma or unquoted key is the usual cause.
- Copy the result. Do not rely on this page as a JSON Schema checker.
Key Features
- Local parse/format — no upload
- Pretty-print and minify
- Inline syntax errors
- Works offline after the page is loaded