JSON Formatter
Format, minify, and validate JSON online. Paste API responses or config files — all processing stays in your browser.
Format
JSON
Pretty-print, minify, and validate JSON.
Ctrl+Enter to Format
Recent Payloads
Payloads you format will appear here for quick access. Stored locally in your browser.
What this tool does
Pretty-print, minify, and validate JSON so you can inspect API responses, configs, and logs quickly.
Privacy
Your JSON never leaves this tab. Formatting and validation run entirely in your browser.
Use cases
- Debug API responses before integrating an endpoint
- Clean up copied JSON from logs or documentation
- Validate configuration files before deployment
Need JSON Schema validation or custom formatting rules? Suggest a feature →