Format, validate, and minify JSON in the browser without sending content to the server.
The formatter uses the browser's JSON.parse and JSON.stringify APIs to validate, format, and minify strict JSON. It accepts objects, arrays, strings, numbers, booleans, and null, but not relaxed JavaScript syntax.
Paste the JSON, choose format, minify, or validate, and check the status. Use copy or download when the result is valid. Shared links preserve only mode and indentation by default.
Analysis happens in your browser. This tool does not send the content to the server.
Choose formatting for readability, minification for transport, or syntax-only validation.
By default, the link stores only mode and indentation.
The current link does not include the pasted JSON.
The tool uses JSON.parse, so JavaScript objects, comments, unquoted keys, and trailing commas are rejected.
Formatting adds line breaks and indentation for reading. Minification removes unnecessary whitespace and preserves the data.
Pasted JSON stays in the browser. Include content in the link only when the payload may be read by everyone who receives the URL.
No. Parsing, formatting, and minification happen in the browser. Content only enters the link when you enable the include JSON option.
Strict JSON does not allow comments, single quotes, unquoted keys, trailing commas, NaN, or Infinity.
Formatting adds indentation and line breaks for reading. Minifying removes unnecessary whitespace to reduce payload size.
No. It validates JSON syntax only. It does not confirm schemas, API contracts, business rules, or sensitive data.
Yes, but only after enabling the option to include JSON in the link. Do not use that with tokens, credentials, personal data, or private payloads.