Format JSON Without Installing Any Software
You don't need VS Code, IntelliJ, or any text editor to format JSON. Irreva's JSON Formatter runs entirely in your browser — paste, format, copy. No install, no sign-up.
What you get without any install
- Pretty-print JSON with 2 or 4 space indentation
- Minify JSON to reduce payload size
- Real-time syntax validation with error messages
- One-click copy to clipboard
- Works offline once the page is loaded
Frequently Asked Questions
Can I format very large JSON?
Yes — up to several MB works fine in modern browsers. Files over 10MB may be slower depending on your device.
Is it safe to paste API responses here?
Yes — Irreva's JSON Formatter uses native JSON.parse in your browser. Your data is never sent to any server.