JSON Formatter & Validator
Paste JSON to format, validate, and explore it with an interactive tree view. Generate TypeScript interfaces from your data. No account, no upload — runs entirely in your browser.
Format JSON NowNo UploadFiles stay on your device
No SignupNo account required
Runs in BrowserWorks offline too
Free ForeverNo limits, no watermarks
What you get
- ✓Format and beautify JSON
- ✓Validate syntax with error messages
- ✓Interactive tree viewer
- ✓JSONPath search
- ✓Generate TypeScript interfaces
- ✓No signup or account needed
Frequently asked questions
Can this generate TypeScript types?
Yes. Paste your JSON and use the TypeScript generator to create matching interfaces automatically.
Free · No account · No upload · Works offline