JSON Formatter & Validator
Paste JSON to format, validate, or minify. Everything runs in your browser.
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data-interchange format that's easy for humans to read and write. This tool helps you format, validate, and minify JSON data entirely in your browser — no data is ever sent to a server.
Features
- Format JSON with 2 or 4 space indentation
- Minify JSON to reduce file size
- Validate JSON syntax with helpful error messages
- 100% client-side — your data never leaves your browser