JSON Format/Validate

Format, validate, beautify, and minify JSON data online. Syntax highlighting, error detection, and tree view. Free JSON formatter with client-side processing.

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Features

Format and beautify JSON with customizable indentation
Validate JSON syntax with detailed error messages
Minify JSON to reduce file size
Syntax highlighting for easy reading
Tree view for navigating complex JSON structures

Common Use Cases

Frequently Asked Questions

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data interchange format. It is easy for humans to read and write, and easy for machines to parse and generate. JSON is the most common format for API data exchange.

How do I validate JSON?

Paste your JSON into this tool and it will automatically validate the syntax. Common errors include missing commas, unquoted keys, trailing commas, and mismatched brackets.

What is the difference between beautify and minify?

Beautifying adds indentation and line breaks for readability. Minifying removes all whitespace to reduce file size, which is useful for production APIs and configuration files.

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