JSON5 Formatter
// Format JSON5 with comments and trailing commas
#About JSON5 Formatter
Free online JSON5 formatter and beautifier. Format JSON5 documents that include comments, trailing commas, and unquoted keys. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.
#FAQ
What is JSON5 and how is it different from JSON? ▾
JSON5 is an extension of JSON that allows comments (single and multi-line), trailing commas, unquoted keys, single-quoted strings, and other conveniences. This formatter handles all these features while producing clean, indented output.
Can I use this to format regular JSON too? ▾
Yes, since JSON is a valid subset of JSON5, you can use this formatter for standard JSON files as well. It will format them with proper indentation while preserving any JSON5 features present.
</> Embed this tool ▾
Copy this code to embed the tool on your website. Adjust the height to fit your layout.
<iframe src="https://www.browserutils.dev/embed/json5-formatter" width="100%" height="500" frameborder="0" title="JSON5 Formatter"></iframe>