What this tool does
HTML Formatter uses Prettier's HTML parser and related plug-ins to build syntax trees instead of relying on regular expressions to wrap lines at will. Embedded codes in script and style are also handled by corresponding parsing plugins.
- The code is only parsed as a string, not inserted into the DOM, nor put into an executable iframe.
- Supports full documents and common HTML snippets.
- Parsing errors display specific messages and preserve input.
How to use it
- Paste the HTML document or snippet.
- Choose 2 or 4 spaces indentation.
- Click "Format HTML."
- Copy the results or download formatted.html.
Common uses
- Organize compressed templates.
- Unify indentation and attribute wrapping before code review.
- Check for obvious label structure problems.
HTML Formatter Features
Use Prettier to parse and format HTML, supporting full documents and common code snippets. It is suitable for daily development, debugging, data sorting and code optimization scenarios. The processing results can be directly viewed, copied or downloaded.
FAQ
Will the tool run the script?
Absolutely not. HTML is simply passed to the formatting parser as text, and the results are also displayed in read-only text boxes.
Why is the output style different from the original text?
Prettier uses consistent, deterministic formatting rules, possibly re-wrapping attributes or formatting some tags.
Can a page containing style and script be formatted?
Yes, the page loads HTML, CSS, and JavaScript parsing plugins on demand to handle common embedded content.