Title: Preload CSS for other plugins
Last modified: December 10, 2019

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# Preload CSS for other plugins

 *  Resolved [marcuscrutcher](https://wordpress.org/support/users/marcuscrutcher/)
 * (@marcuscrutcher)
 * [6 years, 6 months ago](https://wordpress.org/support/topic/preload-css-for-other-plugins/)
 * I am using inline & defer CSS and the CriticalCSS API — but I’m still getting
   an “opportunity” on my Lighthouse report that says I should use rel=preload on
   a few CSS files that are related to other plugins.
 * Specifically, Thrive Leads and WP Customer Reviews.
 * Is it possible to make this happen with Autoptimize or should I look for a different
   method?

Viewing 7 replies - 1 through 7 (of 7 total)

 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [6 years, 6 months ago](https://wordpress.org/support/topic/preload-css-for-other-plugins/#post-12223553)
 * hmmm, AO should preload all CSS that is loaded in the HTML that is loaded with`
   <link rel='stylesheet'` but if Thrive or Customer reviews load their CSS differently(?)
   then you would indeed need to look for a different solution?
 *  Thread Starter [marcuscrutcher](https://wordpress.org/support/users/marcuscrutcher/)
 * (@marcuscrutcher)
 * [6 years, 6 months ago](https://wordpress.org/support/topic/preload-css-for-other-plugins/#post-12225125)
 * Ok, thanks for the quick reply! I’ll check with both of them to see how CSS is
   loaded. Here are the files in question in case this means anything to you:
 * /wp-content/plugins/thrive-leads/editor-layouts/css/frontend.css?ver=2.2.6.2
 * /wp-admin/load-styles.php?c=1&dir=ltr&load%5B%5D=dashicons,wp-jquery-ui-dialog&
   ver=5.2.4
 * /wp-content/plugins/wp-customer-reviews/css/wp-customer-reviews-generated.css?
   ver=3.4.1
 * /wp-content/mu-plugins/wpengine-common/css/wpe-common.css?ver=3.2.2
 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [6 years, 6 months ago](https://wordpress.org/support/topic/preload-css-for-other-plugins/#post-12225162)
 * The CSS URL’s are not very revealing, but if you can share your site’s URL I’d
   be happy to have a look 🙂
 *  Thread Starter [marcuscrutcher](https://wordpress.org/support/users/marcuscrutcher/)
 * (@marcuscrutcher)
 * [6 years, 6 months ago](https://wordpress.org/support/topic/preload-css-for-other-plugins/#post-12225170)
 * Ok, thanks. It’s [https://www.celltowerleaseexperts.com](https://www.celltowerleaseexperts.com)
 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [6 years, 6 months ago](https://wordpress.org/support/topic/preload-css-for-other-plugins/#post-12225246)
 * No, don’t see those referenced in the HTML, so AO does not “see” them. They are
   probably loaded by some JS, which also explains why those files are loaded so
   late as can be seen in this screenshot of a webpagetest.org test;
 * ![](https://i0.wp.com/i.imgur.com/BedZvz0.png?ssl=1)
 * Given these files load that late and are loaded by (deferred) JS instead of HTML,
   I don’t think those can be considered render-blocking really, which is confirmed
   by the 0.5s FCP in the same test ([URL here](https://www.webpagetest.org/result/191210_FF_91a554f0158f92ccbd0c18c059e0fd85/))
 *  Thread Starter [marcuscrutcher](https://wordpress.org/support/users/marcuscrutcher/)
 * (@marcuscrutcher)
 * [6 years, 6 months ago](https://wordpress.org/support/topic/preload-css-for-other-plugins/#post-12225260)
 * Good to know. Thanks for checking that out. 🙂
 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [6 years, 6 months ago](https://wordpress.org/support/topic/preload-css-for-other-plugins/#post-12225266)
 * you’re welcome, feel free to [leave a review of the plugin and support here](https://wordpress.org/support/plugin/autoptimize/reviews/#new-post)!
   🙂
 * frank

Viewing 7 replies - 1 through 7 (of 7 total)

The topic ‘Preload CSS for other plugins’ is closed to new replies.

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## Tags

 * [preload](https://wordpress.org/support/topic-tag/preload/)

 * 7 replies
 * 2 participants
 * Last reply from: [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * Last activity: [6 years, 6 months ago](https://wordpress.org/support/topic/preload-css-for-other-plugins/#post-12225266)
 * Status: resolved