← All tools
developer utility · runs locally
JSON Formatter & Validator
Format, validate, and neatly indent JSON locally in your browser.
- ✓ No upload required
- ✓ Instant results
- ✓ Your data stays here
How it works
Paste JSON and run the tool. Valid JSON is formatted with two-space indentation; invalid JSON gets an explanation.
Example
For example, {"name":"Ada","active":true} becomes neatly indented JSON.
Results
Results will appear here.