JSON Formatter

Format, validate, minify and beautify JSON data in your browser. No data sent to server.

How to Use This Tool

  1. 1Paste your JSON data into the input box on the left
  2. 2Click Format & Validate to check and beautify it
  3. 3If there are errors, the tool will highlight them and explain the issue
  4. 4Use Minify to compress the JSON for production use
  5. 5Click Copy to copy the result to your clipboard

Frequently Asked Questions

What is the difference between formatting and minifying JSON?

Formatting (beautifying) adds indentation and line breaks for human readability. Minifying removes all whitespace to reduce file size — useful for APIs and production code.

Why is my JSON showing an error?

Common issues include: trailing commas, single quotes instead of double quotes, missing quotes around keys, or incorrect nesting. The validator will point to the exact problem.

Can I use this to format large JSON files?

Yes, but very large files (10MB+) may slow the browser tab. For files that size, consider a dedicated desktop tool.

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