JSON Formatter / Validator
Format, validate, minify, and sort keys — right in your browser. Nothing is uploaded.
All processing is client-side. No data leaves your browser.
Input JSON
Status:
Invalid JSON
Lines: 0
Chars: 0
Size: 0 B
Top-level keys: –
Output
No. Everything runs locally in your browser for privacy and speed.
Copy to clipboard or download the formatted JSON file. Avoid sharing secrets.
We parse and map the reported character position to line/column to help you fix syntax fast.