JSON Formatter & Validator
Pretty-print, minify and validate JSON instantly in your browser.
🌐 Uses API
Search JSON
Quick Tips
- • Use Ctrl+A to select all
- • Search works on keys and values
- • Click paths to copy them
- • Sort Keys organizes alphabetically
Frequently asked questions
Is my JSON sent to a server?
No. Formatting and validation happen entirely in your browser. We don't upload your data.
Can I minify or pretty-print?
Yes. Use the provided actions to minify compact JSON or pretty-print with indentation for readability.
How do I fix errors?
The validator shows error messages and positions so you can correct trailing commas, missing quotes, or brackets.
Do you support large JSON files?
We work in-browser and handle reasonably large inputs. Extremely large files may be slow in older devices.