Best JSON Formatter & Validator Online
Developers paste JSON into online formatters daily. The best tools catch syntax errors with line numbers, support minify/pretty-print, and don't exfiltrate sensitive payloads.
What to look for
- Clear parse errors with position
- Pretty-print and minify
- Client-side processing for secrets
- No paste limits for large payloads
Why Irreva
Uses native JSON.parse in your browser. API responses, JWT payloads, and config files never hit our servers.