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JSON Formatter & Validator
Paste raw JSON and instantly beautify and validate it with proper indentation. This fast JSON formatter helps developers debug APIs, clean payloads, and fix syntax errors quickly.
How to use JSON Formatter & Validator
1
Paste your JSON data into the input box
2
The formatter validates and formats it instantly
3
If there is an error, the line or syntax issue is highlighted
4
Copy the formatted output with the copy button
When to use this tool
- Debugging API responses from web services
- Reading minified JSON from config files
- Validating JSON before using it in code
- Formatting JSON for documentation or sharing
Frequently Asked Questions
What does this tool do?
Formats messy JSON into readable indented structure.
Does it validate JSON?
Yes — shows error message and line number if invalid.
Is my data stored?
No.
Max input?
Up to 1MB.