Title: Critical CSS code
Last modified: October 27, 2022

---

# Critical CSS code

 *  Resolved [kiffa](https://wordpress.org/support/users/kiffa/)
 * (@kiffa)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/critical-css-code/)
 * This is the message I saw
 *     ```
       Optimize CSS Loading
       Move important styling information to the start of the page, which helps pages display your content sooner, so your users don’t have to wait for the entire page to load. Commonly referred to as Critical CSS.
   
       Failed to generate Critical CSS
       Hmm, looks like something went wrong. We're still seeing an unexpected error. Please reach out to our support to get help.
   
       See error message
       ```
   
 * this is my problem
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fcritical-css-code%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  [Daniel](https://wordpress.org/support/users/ihenetudan/)
 * (@ihenetudan)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/critical-css-code/#post-16138585)
 * Hi [@kiffa](https://wordpress.org/support/users/kiffa/),
 * Can you please send us the error message you see when you click “see error message”?
 * We also get occasional HTTP 502 (Bad Gateway) responses when our servers try 
   to communicate with your site.
 * This could also be a one-off communication error, so I’d recommend reinstalling
   Boost and trying to regenerate critical CSS.
 *  Plugin Support [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/)
 * (@erania-pinnera)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/critical-css-code/#post-16163699)
 * Hi there, [@kiffa](https://wordpress.org/support/users/kiffa/),
 * It’s been one week since this topic was last updated. I’m going to mark this 
   thread as solved. If you have any further questions or need more help, you’re
   welcome to open another thread here. Cheers!

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

The topic ‘Critical CSS code’ is closed to new replies.

 * ![](https://ps.w.org/jetpack-boost/assets/icon.svg?rev=2818794)
 * [Jetpack Boost - Website Speed, Performance and Critical CSS](https://wordpress.org/plugins/jetpack-boost/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/jetpack-boost/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/jetpack-boost/)
 * [Active Topics](https://wordpress.org/support/plugin/jetpack-boost/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/jetpack-boost/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/jetpack-boost/reviews/)

 * 2 replies
 * 3 participants
 * Last reply from: [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/)
 * Last activity: [3 years, 7 months ago](https://wordpress.org/support/topic/critical-css-code/#post-16163699)
 * Status: resolved