JSON Formatter & Validator
Format, validate, and minify JSON strings securely in your browser.
Your JSON is processed entirely in your browser and is never uploaded.
Format and validate JSON data instantly. Our JSON formatter parses your code, checks for syntax errors, and beautifully indents it for maximum readability.
How to Use
- Paste your raw or minified JSON string into the input area.
- The tool validates the JSON automatically.
- Select your preferred indentation (2 or 4 spaces) or choose 'Minify' to compress the JSON.
Examples
Common JSON Errors
Missing quotes around keys, trailing commas, or using single quotes instead of double quotes are the most common reasons JSON fails validation.