JSON Formatter & Validator
Pretty print, minify, and validate JSON — everything runs locally in your browser.
Tips
- For QR payloads, use the JSON type in our QR Generator.
- Share sensitive JSON (API keys, tokens) via Secret Share.
JSON Formatter FAQ
What does pretty printing do? ＋
Pretty printing formats JSON with indentation and line breaks so it’s easier to read and debug.
What is minified JSON? ＋
Minified JSON removes all unnecessary whitespace to reduce file size. Useful for APIs and production environments.
How does validation work? ＋
The tool attempts to parse your JSON. If parsing fails, you’ll see an error message with details about the issue.
Is my JSON sent to your server? ＋
No. All formatting and validation happens directly in your browser for maximum privacy.
Can I use comments in JSON? ＋
No. JSON does not support comments. Use keys and values only, following strict JSON syntax.