What is a JSON formatter?

A JSON formatter is a tool that converts compressed or minified JSON data into a human-readable format with proper indentation and line breaks. It helps developers easily read, edit, and debug JSON data.

How do I format JSON online?

To format JSON online: 1) Paste your JSON text into the input field, 2) The tool will automatically format it with proper indentation, 3) Choose your preferred indentation (2, 4, or 8 spaces), 4) Copy the formatted result. No login or installation required.

Can I validate JSON with this tool?

Yes, this tool automatically validates your JSON as you type. If there are syntax errors, it will show clear error messages indicating what went wrong and where the error occurred.

Is this JSON formatter free?

Yes, this JSON formatter is completely free to use. No registration, no login, and no limitations. All processing is done in your browser for privacy.

DevTools Hub

JSON Formatter

Format, validate, and minify JSON with real-time feedback

Indent:

Input

Paste JSON here...

Output

Formatted JSON will appear here...

Tips

• Paste your JSON and it will be automatically formatted

• Use Cmd+V to paste

• Use Cmd+C to copy the result

• AI-powered TypeScript interface generation coming soon!

JSON Formatter - Format, Validate & Minify JSON Online | DevTools Hub