JSON Formatter & Beautifier Online
Format, validate, and beautify JSON data instantly in your browser. Paste raw JSON and get clean, indented output ready to copy.
Why Format JSON?
Raw JSON returned by APIs or stored in config files is often minified into a single line, making it nearly impossible to read. A JSON formatter adds proper indentation and line breaks so you can quickly scan the structure, spot nested objects, and find the keys you need. Clean formatting also makes code reviews and debugging significantly faster.
Supported JSON Standards
This tool fully supports RFC 8259 (the current JSON standard), including Unicode escape sequences, nested arrays, and deeply nested objects. It also handles JSON5 comments gracefully by stripping them before validation, so you can paste config files from tools like VS Code without errors.