Primoz Cigler

This simple plugin hooks to the <code>wp_enqueue_scripts</code> and removed the <code>id='<handle of the css file>-css'</code> attribute. Most of the time you don’t need these IDs anyway.
I am using the <a href="https://developers.google.com/speed/pagespeed/module" rel="nofollow ugc">mod_pagespeed</a> module on my server and the <code>combine_css</code> filter doesn’t work if the <code><link></code> tags have ID attributes. So based on <a href="https://blog.codecentric.de/en/2011/10/wordpress-and-mod_pagespeed-why-combine_css-does-not-work/" rel="nofollow ugc">this blog post</a> I created a very very simple (basically one-liner) plugin that removes the ID attribute using regex.
There is also a very simple unit test for it, created using wp-cli: <code>wp scaffod plugin ...</code>.
Enjoy the speedy sites! 🙂
Do you want to contribute? Great! Please fork <a href="https://github.com/primozcigler/remove-css-ids" rel="nofollow ugc">this repository</a>, make the changes and create a pull request.

Remove CSS link IDs

WP plugin that removes the ID attributes from the  tags for the CSS files. Used mostly together with mod_pagespeed.

kaggdesign

PageSpeed Module is an open-source module for Apache and Nginx created by Google to help Make the Web Faster by rewriting web pages to reduce latency and bandwidth.
The plugin allows purge caches created by Apache or Nginx Module and turn on development mode for WordPress site, bypassing PageSpeed cache.
The plugin requires PageSpeed Module to be installed with your Apache or Nginx web server. If PageSpeed Module is not installed, the plugin does nothing.

PageSpeed Module

You saved me the job of developing a plugin! Thank you.

Does what it says on the tin

PageSpeed Module plugin supports WordPress installation under Apache or Nginx with PageSpeed Module.

Remove CSS link IDs vs PageSpeed Module