JSON Local

Format, validate, minify, and visualize JSON instantly. With syntax highlighting and tree view.

PopularNo uploadFreeNo limits
Indent size:
InputJSON
Output
Input data stats appear here ๐Ÿ”’ Everything is processed on your device. Nothing is uploaded to our servers.
// good to know

Frequently asked

JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate.

Simply paste your JSON in the input field and it will be automatically formatted with syntax highlighting. You can choose the indent size, minify, or view the structure as a tree.

It detects syntax errors such as missing commas, incorrect quotes, unclosed braces, and other formatting issues. It shows you exactly the line and column of the error.

Yes, everything is processed in your browser. Your JSON is never sent to any external server.

// keep going

Related tools