📋 JSON Formatter
Format, minify, and validate JSON data instantly
How to Use
Paste your JSON data into the text area and click "Format" to pretty-print it with proper indentation, or click "Minify" to compress it into a single line. If the JSON contains syntax errors, an error message will appear instantly. The tool also displays the total number of keys and the data size in bytes.
- API debugging — Pretty-print API responses for easier reading
- Config editing — Format package.json or other configuration files
- Data validation — Quickly detect JSON syntax errors
- Data compression — Minify JSON to reduce payload size
FAQ
What types of JSON are supported?
All standard JSON formats are supported, including objects, arrays, strings, numbers, booleans, and null values. Deeply nested structures are handled without any issues.
Can it handle large JSON files?
Yes, as long as your browser has enough memory. For very large files (several megabytes), processing may take a few seconds, but the tool will still work correctly.
Is my data sent to a server?
No. All processing happens entirely in your browser. Your JSON data never leaves your device, making it safe to use with sensitive or confidential data.