JSON Formatter & Validator
Paste your JSON to format, validate, and beautify. No data is sent to any server.
About JSON Formatter
This free online JSON formatter lets you format, validate, and beautify your JSON data instantly. All processing happens in your browser — no data is sent to any server. Supports indentation with 2 spaces, 4 spaces, or tabs. Minify JSON to reduce file size.
Features
- Format and beautify JSON with customizable indentation
- Validate JSON syntax with clear error messages
- Minify JSON to reduce size
- Copy formatted output to clipboard
- 100% client-side — your data never leaves your browser