About this tool
A JSON formatter beautifies JSON data by structuring it in a readable format. It also validates and minifies JSON for developers, analysts, and anyone working with APIs or data.
Use it to debug API responses, clean configuration files, or share readable JSON with your team. Large files are handled in milliseconds.
All data is processed locally on your device — nothing is uploaded.
Frequently asked questions
Does it validate my JSON?
Yes — if the input can't be parsed, the output shows an error instead of a result, so you know it's invalid before using it. For exact line-and-column error positions plus structure stats, use the dedicated JSON validator.
What's the difference between format and minify?
Format adds indentation and line breaks for reading; minify strips all whitespace for the smallest payload.
Is there a size limit?
No hard limit — files of several megabytes format in milliseconds since everything runs in your browser.