JSON Formatter & Validator
Paste your JSON to format, validate, and minify. Everything runs in your browser.
Valid JSON163 chars · 12 lines · 6 keys
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format. It's easy for humans to read and write, and easy for machines to parse and generate.
How to Use This JSON Formatter
Paste your JSON in the input area on the left. The formatter will automatically validate it and show the formatted output on the right. If there are errors, you'll see the exact line and position of the problem.
Features
- Format/beautify JSON with configurable indentation (2 or 4 spaces, tabs)
- Validate JSON and show precise error location
- Minify JSON (remove all whitespace)
- Copy formatted output to clipboard
- 100% client-side — your data never leaves your browser