Title: CCSS clarification
Last modified: August 31, 2026

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# CCSS clarification

 *  Resolved [rudolfl](https://wordpress.org/support/users/rudolfl/)
 * (@rudolfl)
 * [4 days, 20 hours ago](https://wordpress.org/support/topic/ccss-clarification/)
 * Hi,
 * I was reading this article [https://www.quic.cloud/ccss-and-ucss-a-handy-guide/](https://www.quic.cloud/ccss-and-ucss-a-handy-guide/)
   and I have few questions about CCSS (Critical CSS)
    1. How do I know if CCSS was generated for the page? What do I look for in HTML?
       For UCSS and cache, LiteSpeed leaves a comment at the bottom, not for CCSS
    2. In the article it says “The cron picks up the CCSS and saves it to be inserted
       into the HTML of all pages that have that post type next time those pages are
       cached”. Does it mean, I have to periodically clear LSCache so that CCSS changes
       are being picked up when page is cached?

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [asfly](https://wordpress.org/support/users/asfly/)
 * (@asfly)
 * [4 days, 19 hours ago](https://wordpress.org/support/topic/ccss-clarification/#post-19007107)
    1. You can check the page source/HTML in the same way you check for UCSS. When 
       CCSS has been generated and loaded, LiteSpeed adds a comment similar to:
 * `<!-- QUIC.cloud CCSS loaded ✅ /ccss/filename.css -->`
 * This confirms that the CCSS has been generated and is being loaded on the page.
    2. No, you do **not** need to periodically clear LSCache manually. Once CCSS/UCSS
       is generated, the plugin automatically purges the related page/cache so that
       the newly generated CSS can be picked up the next time the page is cached. You
       should then see the corresponding CCSS/UCSS comment in the page HTML.
 *  Thread Starter [rudolfl](https://wordpress.org/support/users/rudolfl/)
 * (@rudolfl)
 * [4 days, 19 hours ago](https://wordpress.org/support/topic/ccss-clarification/#post-19007109)
 * Thank you for the info.
 * I did check my other sites and, yes, I do see the comment. All good!
 * Rudolf

Viewing 2 replies - 1 through 2 (of 2 total)

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 * 2 replies
 * 2 participants
 * Last reply from: [rudolfl](https://wordpress.org/support/users/rudolfl/)
 * Last activity: [4 days, 19 hours ago](https://wordpress.org/support/topic/ccss-clarification/#post-19007109)
 * Status: resolved