Minified to pretty
- {"a":1,"b":2} -> expands to multi-line
format validator
JSON Prettifier
Format JSON with indentation for quick readability and debugging.
Results
Processing…- Status
- Processing...
- Details
- Processing...
- Prettified JSON
- Processing...
Rules & checks
Parses JSON5 for lenient input (trailing commas, single quotes).
Outputs standard JSON with two-space indentation.
Runs entirely in your browser.
When to use it
- Make error messages clearer before debugging an API response
- Prepare JSON for code review or documentation
- Normalize formatting before checking into source control
Tips
- Prettify then validate to pinpoint errors quickly
- Remove credentials or secrets before sharing prettified payloads
Examples
Invalid JSON
- {name:"Ada"} -> Flags missing quotes
FAQs
- Do you send data anywhere?
- No. Formatting happens in your browser only.
- Can I change indentation?
- Current version uses two spaces for consistency.
Related validators
Formatting only; does not validate against schemas.