Format, validate, minify, and convert JSON data instantly. All processing happens in your browser — no data is ever sent to any server. Completely free with no usage limits.
Format & Beautify — Pretty-print JSON with customizable indentation (2 spaces, 4 spaces, or tabs). Optionally sort object keys alphabetically.
Validate — Instantly detect syntax errors with precise line and column numbers, plus contextual code display showing exactly where the error is.
Minify — Compress JSON by removing all unnecessary whitespace. See the exact bytes saved.
Statistics — Analyze your JSON structure: nesting depth, object/array/string/number counts, size metrics, and duplicate key detection.
Convert — Transform JSON to YAML, CSV, or XML formats with one click.
Privacy-first — Your data never leaves your browser. Zero server requests. Zero tracking of your JSON content.
No limits — Format files of any size. No signup, no rate limits, no ads.
Developer-friendly — Keyboard shortcuts, syntax highlighting, one-click copy, and a clean dark interface.