A JSON formatter prettifies minified or messy JSON code by adding indentation, line breaks, and structure. It's essential for debugging APIs, reading config files, or sharing data—making complex objects human-readable without errors.

Yes! Our tool is 100% free with no sign-ups or limits. All processing happens in your browser, so your data never leaves your device—perfect for sensitive API responses or private projects.

Our validator checks against JSON standards (RFC 8259), highlighting syntax errors like missing commas or unquoted keys. It even auto-fixes common issues to save you time.

Absolutely. Handle files up to several MB with our efficient tree view and search features. For massive datasets, format in chunks if needed.

Unlike basic formatters, we combine validation, repair, tree navigation, and search in one intuitive interface. Plus, dark mode and no ads mean a distraction-free experience.