Practical guide
How to use the html minifier
The HTML minifier reduces formatting and removable markup around a document or fragment. It can lower transfer size, but templating, inline scripts and whitespace-sensitive elements require careful testing.
Good reasons to use it
- Compact a static HTML fragment before embedding it.
- Measure the difference between readable source and production markup.
- Remove comments and formatting from a generated static page.
A reliable workflow
- Paste non-confidential HTML and save the source.
- Generate the compact form.
- Validate the markup and test interactive, preformatted and inline-script areas.
How to interpret the result
HTML is usually compressed during transfer, so minification may offer modest additional savings. The larger gains often come from optimized images, fewer blocking assets and simpler DOM structure.
Frequently asked questions
Will this improve Core Web Vitals by itself?
Usually only slightly. Images, JavaScript execution, server response and layout behavior are often more important.
Can comments always be removed?
No. Conditional, build, licensing or application-specific comments may have a purpose. Review them first.