Browser-Local Formatting
Your HTML is formatted in the current browser session. The formatter does not call this site's server APIs, so pasted markup stays on the page.
Toolbox
HTML Formatter
Format messy HTML into readable indentation locally in your browser, with comment preservation and raw text blocks kept intact.
Formatted HTML
Paste HTML and the browser-local formatted result will appear here.
Raw Text Blocks
The formatter keeps `pre`, `textarea`, `script`, and `style` contents as raw text instead of reflowing their inner spacing.
FAQ
Is my HTML uploaded to the server?
No. Formatting runs locally in your browser and does not use a server-side processing API.
Can it validate invalid HTML?
It catches basic malformed closing tags so obvious nesting problems are visible, but it is a formatter rather than a full HTML validator.
What indentation options are supported?
You can switch between two-space and four-space indentation for the formatted result.