JSON Formatter
Beautifully format, validate, compress and sort JSON data locally.
🔒 Processed entirely in your browser — nothing you enter here is ever uploaded.
The result appears on this page after you run the tool. Nothing you enter is uploaded.
Result
About this tool
Are you familiar with the situation when you receive a response from an API or config in the form of a long single-line JSON text, in which it is impossible to find the desired parameter or understand the nesting of objects?
Our JSON formatter will quickly make data structured, beautiful and easy to read. Everything works locally: your confidential API keys or personal data are never transferred to third-party servers.
It highlights syntax, finds errors, allows you to compress JSON into one line or sort keys alphabetically. A special feature is the ability to instantly copy or download the formatted result.
Example. The text {"b":1,"a":2} with sort keys and 2-space spacing pretty-prints with a before b.
Limit. A trailing comma fails JSON.parse and is not repaired.