JSON Formatter
Format, validate and minify JSON data. All processing happens locally in your browser.
How to Use
- Paste your raw JSON into the input area.
- Click Format to beautify with proper indentation and syntax highlighting. Switch between Format, Minify, and Compact modes using the tabs.
- Copy the formatted output with one click. Use Minify mode for the smallest possible file size.
Frequently Asked Questions
- What happens if my JSON has validation errors?
- The tool pinpoints the exact error location with a red highlight and line number. Common issues include trailing commas, unquoted keys, and mismatched brackets.
- Can I minify JSON with this tool?
- Yes — switch to Minify mode to remove all unnecessary whitespace and produce the most compact output. Compact mode keeps some readability while reducing size.
- What is the maximum JSON size I can format?
- There is no hard limit — the formatter can handle large JSON objects. Very large files (over 10MB) may take a moment to process.