Format, clean, and read JSON data easily.
Paste JSON data to format and make it easier to read, debug, and share.
Format, minify, and validate JSON directly in your browser.
Paste JSON to format, minify, or validate it.
A JSON formatter is helpful when you are inspecting an API response, debugging a config file, comparing two payloads, or preparing sample data to share with a teammate. Reformatting a compact JSON document makes nesting and types obvious at a glance, which saves time when tracking down a bug.
Validate JSON before committing it to a repository or sending it to production. Keep keys consistent, prefer ISO date strings, and remove sensitive values before sharing examples. For network transport, minify the payload; for documentation or version control, keep a formatted copy so diffs stay readable.
It takes raw or minified JSON and rewrites it with consistent indentation and line breaks so the structure is easy to scan. It can also flag syntax errors and, when needed, collapse the output back into a single line for transport.
No. Formatting, validation, and minification happen entirely in your browser. Your payload — including any keys, tokens, or sample data — never leaves your device.
A formatter parses the input with the same rules as a JSON parser. If it can pretty-print without errors, the document is syntactically valid; if not, you will see the position of the first problem (for example, a missing comma or unbalanced bracket).
Formatting adds whitespace to make JSON readable for humans. Minifying removes that whitespace to produce the smallest possible payload, which is useful when sending data over the network or embedding it in code.
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