💻 Developer Tools

JSON Formatter

Paste raw JSON to beautify, validate, or minify it instantly with syntax highlighting.

Input JSON

Output

About JSON Formatter

Validates your JSON against the spec, then renders it with syntax highlighting so you can spot issues instantly. Minify removes all whitespace to reduce payload size. All processing happens in your browser — your data stays private.

How to Use the JSON Formatter

Paste your JSON

Paste raw or minified JSON into the input box on the left. The formatter validates it as you type.

View formatted output

The right panel shows your JSON beautifully formatted with syntax highlighting for keys, strings, and values.

Copy or minify

Click Copy to grab the formatted JSON, or switch to Minify mode to compress it back to a single line.

Common Use Cases

✓Debug API responses from REST endpoints
✓Format minified JSON for readability
✓Validate JSON before using it in code
✓Clean up JSON configuration files
✓Share readable JSON with teammates

Frequently Asked Questions

What does JSON formatting do?+

It takes compact or messy JSON and adds proper indentation and line breaks so it is easy to read and navigate.

Will it tell me if my JSON is invalid?+

Yes. Any syntax error is highlighted with the exact error message so you can fix it immediately.

Is there a size limit for JSON input?+

There is no hard limit. The formatter runs in your browser so very large files may slow down depending on your device.

What is the difference between format and minify?+

Formatting adds whitespace for readability. Minifying removes all whitespace to reduce file size for use in production code.