Fast Velocity Minify

What the author says it does

HTML, CSS & JS optimization plugin for developers and advanced users. Note you need to look into the HELP tab after installing the plugin and manually configure it for your site. Each site is different, so the default recommendations may or may not work for you and you will need to test and find out how to adjust your settings.

Minification is done on the frontend during the first uncached request. Once the first request is processed, any other pages that require the same set of CSS and JS files will be able to reuse the same generated static CSS or JS file.

If your cache is growing significantly, this could mean one of your CSS or JS files is dynamic and changes on every pageview. In that case, you would need to add the file to the ignore list, else the cache would grow indefinitely (because obviously the original files themselves are dynamic and when you minify, the plugin sees a different file).

Kindly read the HELP section after installing the plugin, about possible issues and how to solve them.

Additional Optimization

I can offer you additional custom made optimization on top of this plugin. If you would like to hire me, please visit my profile links for further information.

WP-CLI Commands

• Purge all caches: wp fvm purge
• Purge all caches on a network site: wp --url=blog.example.com fvm purge

The opening of the plugin's own description. The full text, installation notes and changelog are on its WordPress.org page.

Latest changelog entry

3.5.8 [2026.10.28]

• Security: fixed a stored cross-site scripting issue in the bundled HTML parser. Text in visitor content can no longer imitate the parser’s internal placeholders, and attribute values changed by the plugin are escaped. Reported by Alpaslan Fatih Sözer through Patchstack.
• Security: the HTML minifier’s internal placeholders can no longer be imitated by page content
• Fixed pages that could hang when their content contained text resembling a parser placeholder
• Fixed attribute quotes when the plugin removes an attribute or a tag repeats one, which could break markup