JSON Formatter & Pretty Print Online (Free, Private)
Pretty-print, minify, and validate JSON online for free. Runs in your browser — no upload, no sign-up.
Raw JSON from APIs is often minified — one long line that is hard to read and debug. Pretty-printing adds indentation so you can inspect nested objects, spot missing commas, and compare payloads before deployment.
When to pretty-print JSON
- Debugging REST or GraphQL API responses
- Reviewing config files before commit
- Validating JSON syntax before sending to production
- Sharing formatted output with teammates via shareable link