JSON formatter
Format and indent JSON with a chosen indentation width. Invalid input is reported clearly, and all processing stays in your browser.
Formatted JSON
—// About this tool
Make compact or minified JSON readable before debugging or reviewing an API response. Paste JSON, choose the indentation, and copy the result.
// How to use it
- Paste the JSON to format.
- Choose the indentation width.
- Copy the formatted JSON.
// Frequently asked questions
Does it change the data?
No. Only whitespace is changed; key order and values are preserved.
Can it fix invalid JSON?
No. Invalid input is reported with an error instead of being guessed.