Title: [Hummingbird Performance - Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN] Support - page 9 | WordPress.org --- # [Hummingbird Performance - Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN] Support Search for: [Log in to Create a Topic](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Fplugin%2Fhummingbird-performance%2Fpage%2F9%2F%3Foutput_format%3Dmd&locale=en_US) [←](https://wordpress.org/support/plugin/hummingbird-performance/page/8/?output_format=md) [1](https://wordpress.org/support/plugin/hummingbird-performance/?output_format=md) [2](https://wordpress.org/support/plugin/hummingbird-performance/page/2/?output_format=md) [3](https://wordpress.org/support/plugin/hummingbird-performance/page/3/?output_format=md)… [8](https://wordpress.org/support/plugin/hummingbird-performance/page/8/?output_format=md) 9 [10](https://wordpress.org/support/plugin/hummingbird-performance/page/10/?output_format=md)… [40](https://wordpress.org/support/plugin/hummingbird-performance/page/40/?output_format=md) [41](https://wordpress.org/support/plugin/hummingbird-performance/page/41/?output_format=md) [42](https://wordpress.org/support/plugin/hummingbird-performance/page/42/?output_format=md) [→](https://wordpress.org/support/plugin/hummingbird-performance/page/10/?output_format=md) - Topic - Participants - Replies - Last Post * - [Mixed content revolution slider](https://wordpress.org/support/topic/mixed-content-revolution-slider/) - Started by: [diogomarques](https://wordpress.org/support/users/diogomarques/) - 6 - 11 - [3 years, 7 months ago](https://wordpress.org/support/topic/mixed-content-revolution-slider/#post-16040819) - [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) * - [Performance report failing](https://wordpress.org/support/topic/performance-report-failing/) - Started by: [meetmichael](https://wordpress.org/support/users/meetmichael/) - 3 - 4 - [3 years, 12 months ago](https://wordpress.org/support/topic/performance-report-failing/#post-15660109) - [Nithin – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport11/) * - [Icons not showing](https://wordpress.org/support/topic/icons-not-showing-92/) - Started by: [mharris85](https://wordpress.org/support/users/mharris85/) - 2 - 2 - [4 years ago](https://wordpress.org/support/topic/icons-not-showing-92/#post-15638874) - [Nithin – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport11/) * - [Mobile: Defer offscreen image shows old image](https://wordpress.org/support/topic/mobile-defer-offscreen-image-shows-old-image/) - Started by: [ggilfedder](https://wordpress.org/support/users/ggilfedder/) - 3 - 2 - [4 years ago](https://wordpress.org/support/topic/mobile-defer-offscreen-image-shows-old-image/#post-15601205) - [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) * - [slow to load in mobile](https://wordpress.org/support/topic/slow-to-load-in-mobile/) - Started by: [crumpola](https://wordpress.org/support/users/crumpola/) - 2 - 2 - [4 years ago](https://wordpress.org/support/topic/slow-to-load-in-mobile/#post-15599469) - [Nithin – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport11/) * - [Assets folder](https://wordpress.org/support/topic/assets-folder/) - Started by: [eWallz](https://wordpress.org/support/users/archonic08/) - 3 - 2 - [4 years ago](https://wordpress.org/support/topic/assets-folder/#post-15599358) - [Nithin – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport11/) * - [Icon disappeared](https://wordpress.org/support/topic/icon-disappeared-4/) - Started by: [riccardolinares](https://wordpress.org/support/users/riccardolinares/) - 3 - 2 - [4 years ago](https://wordpress.org/support/topic/icon-disappeared-4/#post-15568816) - [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) * - [Rev slider disappears](https://wordpress.org/support/topic/rev-slider-disappears/) - Started by: [mharris85](https://wordpress.org/support/users/mharris85/) - 4 - 4 - [4 years ago](https://wordpress.org/support/topic/rev-slider-disappears/#post-15568817) - [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) * - [Preconnect or DNS Prefetch](https://wordpress.org/support/topic/preconnect-or-dns-prefetch/) - Started by: [tabatha.j22](https://wordpress.org/support/users/tabathaj22/) - 2 - 3 - [4 years, 1 month ago](https://wordpress.org/support/topic/preconnect-or-dns-prefetch/#post-15542645) - [tabatha.j22](https://wordpress.org/support/users/tabathaj22/) * - [Hummingbird and Cloudflare not working together](https://wordpress.org/support/topic/hummingbird-and-cloudflare-not-working-together/) - Started by: [minkerr](https://wordpress.org/support/users/minkerr/) - 5 - 9 - [4 years ago](https://wordpress.org/support/topic/hummingbird-and-cloudflare-not-working-together/#post-15615531) - [Laura – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support8/) * - [PHP 8.1 Undefined array key Error](https://wordpress.org/support/topic/php-8-1-undefined-array-key-error/) - Started by: [scottm1967](https://wordpress.org/support/users/scottm1967/) - 5 - 5 - [3 years, 11 months ago](https://wordpress.org/support/topic/php-8-1-undefined-array-key-error/#post-15687968) - [Nebu John – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport14/) * - [Gzip](https://wordpress.org/support/topic/gzip-9/) - Started by: [hartnetthj](https://wordpress.org/support/users/hartnetthj/) - 3 - 3 - [4 years, 1 month ago](https://wordpress.org/support/topic/gzip-9/#post-15558384) - [Nithin – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport11/) * - [Asset Optimization Not Working Properly](https://wordpress.org/support/topic/asset-optimization-not-working-properly/) - Started by: [optimalh](https://wordpress.org/support/users/optimalh/) - 3 - 7 - [4 years, 1 month ago](https://wordpress.org/support/topic/asset-optimization-not-working-properly/#post-15558383) - [Nithin – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport11/) * - [Big Bug on Version 3.3.2 (HummingBird – Desktop Cache not clearing correctly)](https://wordpress.org/support/topic/big-bug-on-version-3-3-2-hummingbird-desktop-cache-not-clearing-correctly/) - Started by: [jameih](https://wordpress.org/support/users/jameih/) - 5 - 6 - [4 years ago](https://wordpress.org/support/topic/big-bug-on-version-3-3-2-hummingbird-desktop-cache-not-clearing-correctly/#post-15570812) - [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) * - [Spam HTML Files Being Added to Cache](https://wordpress.org/support/topic/spam-html-files-being-added-to-cache/) - Started by: [leafwrench](https://wordpress.org/support/users/leafwrench/) - 2 - 2 - [4 years, 1 month ago](https://wordpress.org/support/topic/spam-html-files-being-added-to-cache/#post-15503990) - [leafwrench](https://wordpress.org/support/users/leafwrench/) * - [Fontawesome icons don’t load](https://wordpress.org/support/topic/fontawesome-icons-dont-load/) - Started by: [hazelln](https://wordpress.org/support/users/hazelln/) - 2 - 2 - [4 years, 1 month ago](https://wordpress.org/support/topic/fontawesome-icons-dont-load/#post-15478449) - [hazelln](https://wordpress.org/support/users/hazelln/) * - [Hummingbird Output Reveals Admin URL](https://wordpress.org/support/topic/admin-ajax-output-revealing-admin-url/) - Started by: [Fibro Jedi](https://wordpress.org/support/users/fibrojedi/) - 2 - 2 - [4 years, 1 month ago](https://wordpress.org/support/topic/admin-ajax-output-revealing-admin-url/#post-15474642) - [Fibro Jedi](https://wordpress.org/support/users/fibrojedi/) * - [Asset Optimization not working on Production site](https://wordpress.org/support/topic/asset-optimization-not-working-on-production-site/) - Started by: [liz.mcruz](https://wordpress.org/support/users/lizmcruz/) - 3 - 2 - [4 years, 1 month ago](https://wordpress.org/support/topic/asset-optimization-not-working-on-production-site/#post-15498745) - [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) * - [Cache and form hang](https://wordpress.org/support/topic/cache-and-form-hang/) - Started by: [Kjetil](https://wordpress.org/support/users/kjetilgf/) - 4 - 5 - [4 years, 1 month ago](https://wordpress.org/support/topic/cache-and-form-hang/#post-15505957) - [Kjetil](https://wordpress.org/support/users/kjetilgf/) * - [Mixed content issues from relative urls](https://wordpress.org/support/topic/mixed-content-issues-from-relative-urls/) - Started by: [Joe Fawley](https://wordpress.org/support/users/notrob0t/) - 4 - 5 - [4 years, 1 month ago](https://wordpress.org/support/topic/mixed-content-issues-from-relative-urls/#post-15498741) - [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) * - [Most pages don’t appear to be caching](https://wordpress.org/support/topic/most-pages-dont-appear-to-be-caching/) - Started by: [atkulp](https://wordpress.org/support/users/atkulp/) - 4 - 8 - [4 years, 1 month ago](https://wordpress.org/support/topic/most-pages-dont-appear-to-be-caching/#post-15488194) - [atkulp](https://wordpress.org/support/users/atkulp/) * - [Responsive Galleries](https://wordpress.org/support/topic/responsive-galleries/) - Started by: [mlt4486](https://wordpress.org/support/users/mlt4486/) - 3 - 2 - [4 years, 1 month ago](https://wordpress.org/support/topic/responsive-galleries/#post-15475818) - [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) * - [Gzip is not working properly](https://wordpress.org/support/topic/gzip-is-not-working-properly-13/) - Started by: [pristinematt](https://wordpress.org/support/users/pristinematt/) - 3 - 3 - [4 years, 1 month ago](https://wordpress.org/support/topic/gzip-is-not-working-properly-13/#post-15475822) - [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) * - [There was a problem fetching the desktop test results. Please try running a new](https://wordpress.org/support/topic/there-was-a-problem-fetching-the-desktop-test-results-please-try-running-a-new-3/) - Started by: [whdsolutions](https://wordpress.org/support/users/whdsolutions/) - 3 - 4 - [4 years, 1 month ago](https://wordpress.org/support/topic/there-was-a-problem-fetching-the-desktop-test-results-please-try-running-a-new-3/#post-15516990) - [britt95](https://wordpress.org/support/users/britt95/) * - [CSS clip path changed when asset optimisation used](https://wordpress.org/support/topic/css-clip-path-changed-when-asset-optimisation-used/) - Started by: [katmacau](https://wordpress.org/support/users/katmacau/) - 2 - 2 - [4 years, 2 months ago](https://wordpress.org/support/topic/css-clip-path-changed-when-asset-optimisation-used/#post-15416755) - [katmacau](https://wordpress.org/support/users/katmacau/) * - [Disable caching if session variable exists](https://wordpress.org/support/topic/disable-caching-if-session-variable-exists/) - Started by: [katmacau](https://wordpress.org/support/users/katmacau/) - 4 - 4 - [4 years, 1 month ago](https://wordpress.org/support/topic/disable-caching-if-session-variable-exists/#post-15475826) - [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) * - [Disable browser cache for specific site in multisite](https://wordpress.org/support/topic/disable-browser-cache-for-specific-site-in-multisite/) - Started by: [Deepak](https://wordpress.org/support/users/deepakdcc/) - 3 - 3 - [4 years, 1 month ago](https://wordpress.org/support/topic/disable-browser-cache-for-specific-site-in-multisite/#post-15477773) - [Deepak](https://wordpress.org/support/users/deepakdcc/) * - [Asset optimization not working and I cannot deactivate plugin](https://wordpress.org/support/topic/asset-optimization-not-working-and-i-cannot-deactivate-plugin/) - Started by: [fablebc](https://wordpress.org/support/users/fablebc/) - 5 - 7 - [4 years, 1 month ago](https://wordpress.org/support/topic/asset-optimization-not-working-and-i-cannot-deactivate-plugin/#post-15475828) - [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) * - [Page caching not working](https://wordpress.org/support/topic/page-caching-not-working-3/) - Started by: [edoswald](https://wordpress.org/support/users/edoswald/) - 3 - 2 - [4 years, 1 month ago](https://wordpress.org/support/topic/page-caching-not-working-3/#post-15475830) - [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) * - [Humming bird asset broke my css on site](https://wordpress.org/support/topic/humming-bird-asset-broke-my-css-on-site/) - Started by: [skullboypl](https://wordpress.org/support/users/skullboypl/) - 3 - 2 - [4 years, 1 month ago](https://wordpress.org/support/topic/humming-bird-asset-broke-my-css-on-site/#post-15475865) - [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) *   [←](https://wordpress.org/support/plugin/hummingbird-performance/page/8/?output_format=md) [1](https://wordpress.org/support/plugin/hummingbird-performance/?output_format=md) [2](https://wordpress.org/support/plugin/hummingbird-performance/page/2/?output_format=md) [3](https://wordpress.org/support/plugin/hummingbird-performance/page/3/?output_format=md)… [8](https://wordpress.org/support/plugin/hummingbird-performance/page/8/?output_format=md) 9 [10](https://wordpress.org/support/plugin/hummingbird-performance/page/10/?output_format=md)… [40](https://wordpress.org/support/plugin/hummingbird-performance/page/40/?output_format=md) [41](https://wordpress.org/support/plugin/hummingbird-performance/page/41/?output_format=md) [42](https://wordpress.org/support/plugin/hummingbird-performance/page/42/?output_format=md) [→](https://wordpress.org/support/plugin/hummingbird-performance/page/10/?output_format=md) * ![](https://ps.w.org/hummingbird-performance/assets/icon-256x256.gif?rev=2633221) * [Hummingbird Performance - Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN](https://wordpress.org/plugins/hummingbird-performance/) * [Frequently Asked Questions](https://wordpress.org/plugins/hummingbird-performance/#faq) * [Support Threads](https://wordpress.org/support/plugin/hummingbird-performance/) * [Active Topics](https://wordpress.org/support/plugin/hummingbird-performance/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/hummingbird-performance/unresolved/) * [Reviews](https://wordpress.org/support/plugin/hummingbird-performance/reviews/)