# JSON Formatter & Validator — Free

Format, validate, and minify JSON instantly. 100% in your browser — free, no sign-up, no upload.

## Format and validate JSON

Paste JSON to pretty-print, minify, or catch syntax errors. Everything runs in your browser — your data is never sent anywhere.

## How to

1. Paste your JSON.
2. Click Format or Minify.
3. Copy the result.

## FAQ

**Is it free?**

Yes, completely free with no file limits.

**Is my data private?**

Yes — this tool runs entirely in your browser. Your files and text are never uploaded.


## Related

- [Text Diff Checker — Free, In Browser](/dev/text-diff)
- [Unix Timestamp Converter — Free](/dev/timestamp-converter)
- [UUID Generator (v4) — Free](/dev/uuid-generator)
- [URL Encode / Decode — Free](/dev/url-encode)
- [Hash Generator (SHA-256, SHA-1, SHA-512) — Free](/dev/hash-generator)
- [Base64 Encode / Decode — Free](/dev/base64)
- [JWT Decoder — Free, In Browser](/dev/jwt-decoder)