Does my data leave my device?

No. Everything you paste or open is processed in your browser and stays on your device.

Does it work offline?

Yes. Once this page has loaded, it keeps working without an internet connection.

No limits from us. Very large inputs can be slow because the work uses your device's memory.

Beautify messy HTML or minify it for production.

Mode

Indent

Line width

HTML

Formatted

Paste code to start. Errors show the line and column.

Does my data leave my device?: No. Everything you paste or open is processed in your browser and stays on your device.
Does it work offline?: Yes. Once this page has loaded, it keeps working without an internet connection.
Is there a size limit?: No limits from us. Very large inputs can be slow because the work uses your device's memory.

Ready-made settings for common jobs.

More tools for everyday coding.

Format, validate, tree

Both directions

Indent, validate, minify

Readable queries

Beautify or minify