JSON Formatter & Converter

Paste your JSON to format, validate, minify, or convert to YAML. Everything runs locally in your browser.

Input 0 chars
Output 0 chars
Paste JSON on the left to get started

Instant Formatting

Pretty-print or minify JSON with one click. Supports deeply nested structures.

JSON Validation

Real-time syntax validation with clear error messages and line numbers.

YAML Conversion

Convert between JSON and YAML formats instantly. No data leaves your browser.