Free JSON Formatter

Instantly format, beautify, and validate your JSON data. Parse raw, minified JSON strings into a clean, readable structure with built-in error checking.

Why Use a JSON Formatter & Validator?

JSON (JavaScript Object Notation) is the standard format for exchanging data between servers and web applications. However, machines prefer minified JSON, which is extremely difficult for developers to read or debug.

Beautify and Indent: Our tool converts dense, single-line JSON strings into a beautifully formatted, hierarchical tree structure, making it easy to read arrays and nested objects.
Built-in Linter & Validator: If your JSON fails to parse because of a missing quotation mark, a trailing comma, or an unclosed bracket, our validator instantly catches it and provides the exact error message so you can fix it.
Minify Option: Finished debugging? Use the Minify button to compress your JSON back into a single line, saving bandwidth before deploying your data to production.
100% Client-Side Processing: We respect your data privacy. All parsing, formatting, and validation are executed directly within your browser. Your sensitive API payloads are never sent to external servers.