Title: White flash while loading pages
Last modified: April 19, 2021

---

# White flash while loading pages

 *  Resolved [markd21](https://wordpress.org/support/users/markd21/)
 * (@markd21)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/white-flash-while-loading-pages/)
 * Hello,
 * We’re using AO with criticalcss add-on, along with WP Fastest Cache and keyCDN.
   
   The problem is that we’re seeing a “white flash” when loading any page on our
   website. It was less than half of the second but happens on different devices/
   IPs.
 * We have read through this topic and even turn off Google Optimize Code on our
   Google Tag Manager, however, it didn’t help.
    [https://wordpress.org/support/topic/screen-flashes-for-5-sec-on-firefox-less-noticeably-on-chrom/](https://wordpress.org/support/topic/screen-flashes-for-5-sec-on-firefox-less-noticeably-on-chrom/)
 * Would you mind checking and let us know the solution?
    Regards, Mark
 * P.S: Here is our app setting
    Aggregate JS-files? (x) Also aggregate inline JS?(
   x) Aggregate CSS-files?(x) Inline and Defer CSS? (x)

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/white-flash-while-loading-pages/#post-14335587)
 * Can you share your site’s URL so I can have a quick look at the HTML source Mark?
 *  Thread Starter [markd21](https://wordpress.org/support/users/markd21/)
 * (@markd21)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/white-flash-while-loading-pages/#post-14335684)
 * Hi, can we send it privately via email? And do you think criticalcss is the same
   support team or they are different?
    Thanks! Mark
 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/white-flash-while-loading-pages/#post-14335695)
 * sure; futtta-at-gmail-dot-com. if need be I will include criticalcss team (it’s
   different but we cooperate on a daily basis)
 *  Thread Starter [markd21](https://wordpress.org/support/users/markd21/)
 * (@markd21)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/white-flash-while-loading-pages/#post-14359226)
 * Solved by removing anti-flicker CSS/ JS

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘White flash while loading pages’ is closed to new replies.

 * ![](https://ps.w.org/autoptimize/assets/icon-256X256.png?rev=2211608)
 * [Autoptimize](https://wordpress.org/plugins/autoptimize/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/autoptimize/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/autoptimize/)
 * [Active Topics](https://wordpress.org/support/plugin/autoptimize/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/autoptimize/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/autoptimize/reviews/)

 * 4 replies
 * 2 participants
 * Last reply from: [markd21](https://wordpress.org/support/users/markd21/)
 * Last activity: [5 years, 1 month ago](https://wordpress.org/support/topic/white-flash-while-loading-pages/#post-14359226)
 * Status: resolved