Title: [Hummingbird Performance - Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN] Support - page 33 | 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%2F33%2F%3Foutput_format%3Dmd&locale=en_US) [←](https://wordpress.org/support/plugin/hummingbird-performance/page/32/?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)… [32](https://wordpress.org/support/plugin/hummingbird-performance/page/32/?output_format=md) 33 [34](https://wordpress.org/support/plugin/hummingbird-performance/page/34/?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/34/?output_format=md) - Topic - Participants - Replies - Last Post * - [Are Javascript errors something to worry about?](https://wordpress.org/support/topic/are-javascript-errors-something-to-worry-about/) - Started by: [King Ding](https://wordpress.org/support/users/dazzerr/) - 3 - 4 - [6 years, 11 months ago](https://wordpress.org/support/topic/are-javascript-errors-something-to-worry-about/#post-11592610) - [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * - [Hummingbird vs Autoptimize](https://wordpress.org/support/topic/hummingbird-vs-autoptimize/) - Started by: [shabalinse](https://wordpress.org/support/users/shabalinse/) - 3 - 4 - [6 years, 11 months ago](https://wordpress.org/support/topic/hummingbird-vs-autoptimize/#post-11590270) - [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * - [Browser Caching – Current Expiry FALSE](https://wordpress.org/support/topic/browser-caching-current-expiry-false/) - Started by: [gabriel212](https://wordpress.org/support/users/gabriel212/) - 3 - 8 - [6 years, 11 months ago](https://wordpress.org/support/topic/browser-caching-current-expiry-false/#post-11586056) - [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * - [Hummingbird & Free Cloudflare](https://wordpress.org/support/topic/hummingbird-free-cloudflare/) - Started by: [Knightmoon](https://wordpress.org/support/users/knightmoon/) - 3 - 2 - [6 years, 11 months ago](https://wordpress.org/support/topic/hummingbird-free-cloudflare/#post-11585717) - [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * - [Warning: Can not modify header information](https://wordpress.org/support/topic/warning-can-not-modify-header-information-2/) - Started by: [Jean-Baptiste](https://wordpress.org/support/users/jbc66/) - 2 - 7 - [7 years ago](https://wordpress.org/support/topic/warning-can-not-modify-header-information-2/#post-11529870) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [Caching wont activate](https://wordpress.org/support/topic/caching-wont-activate/) - Started by: [wilkesy](https://wordpress.org/support/users/wilkesy/) - 3 - 2 - [6 years, 11 months ago](https://wordpress.org/support/topic/caching-wont-activate/#post-11585697) - [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * - [Performance test giving no results](https://wordpress.org/support/topic/performance-test-giving-no-results/) - Started by: [billylyonsdesigns](https://wordpress.org/support/users/billylyonsdesigns/) - 3 - 4 - [6 years, 11 months ago](https://wordpress.org/support/topic/performance-test-giving-no-results/#post-11585649) - [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * - [Cloudflare & page caching](https://wordpress.org/support/topic/cloudflare-page-caching/) - Started by: [34sfdsdsds](https://wordpress.org/support/users/34sfdsdsds/) - 3 - 2 - [6 years, 11 months ago](https://wordpress.org/support/topic/cloudflare-page-caching/#post-11585632) - [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * - [Help with cache-control](https://wordpress.org/support/topic/help-with-cache-control/) - Started by: [34sfdsdsds](https://wordpress.org/support/users/34sfdsdsds/) - 3 - 4 - [6 years, 11 months ago](https://wordpress.org/support/topic/help-with-cache-control/#post-11584715) - [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * - [GZIP compression active only for HTML](https://wordpress.org/support/topic/gzip-compression-active-only-for-html/) - Started by: [pokemon9000](https://wordpress.org/support/users/pokemon9000/) - 2 - 2 - [6 years, 11 months ago](https://wordpress.org/support/topic/gzip-compression-active-only-for-html/#post-11584707) - [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * - [Cant run a site test?](https://wordpress.org/support/topic/cant-run-a-site-test/) - Started by: [King Ding](https://wordpress.org/support/users/dazzerr/) - 3 - 2 - [6 years, 11 months ago](https://wordpress.org/support/topic/cant-run-a-site-test/#post-11584702) - [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * - [Whitelisting Hummingbird](https://wordpress.org/support/topic/whitelisting-hummingbird-2/) - Started by: [kendawes](https://wordpress.org/support/users/kendawes/) - 2 - 2 - [6 years, 11 months ago](https://wordpress.org/support/topic/whitelisting-hummingbird-2/#post-11584696) - [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * - [wp hide compatibility problem](https://wordpress.org/support/topic/wp-hide-compatibility-problem/) - Started by: [milenyums](https://wordpress.org/support/users/ozguryaazici/) - 3 - 2 - [6 years, 11 months ago](https://wordpress.org/support/topic/wp-hide-compatibility-problem/#post-11584641) - [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * - [Page/Browser caching is crashing my site](https://wordpress.org/support/topic/page-browser-caching-is-crashing-my-site/) [1](https://wordpress.org/support/topic/page-browser-caching-is-crashing-my-site/?output_format=md) [2](https://wordpress.org/support/topic/page-browser-caching-is-crashing-my-site/page/2/?output_format=md) - Started by: [Martin](https://wordpress.org/support/users/surgicalexperts/) - 3 - 18 - [6 years, 11 months ago](https://wordpress.org/support/topic/page-browser-caching-is-crashing-my-site/page/2/#post-11578589) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [advanced-cache.php file in wp-content directory](https://wordpress.org/support/topic/advanced-cache-php-file-in-wp-content-directory/) - Started by: [Hardip Parmar](https://wordpress.org/support/users/hardipparmar/) - 3 - 7 - [7 years ago](https://wordpress.org/support/topic/advanced-cache-php-file-in-wp-content-directory/#post-11451867) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [GZip not working HTML](https://wordpress.org/support/topic/gzip-not-working-html/) - Started by: [designburst](https://wordpress.org/support/users/designburst/) - 4 - 9 - [7 years ago](https://wordpress.org/support/topic/gzip-not-working-html/#post-11451863) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [GZIP Disabled – AGAIN](https://wordpress.org/support/topic/gzip-disabled-again/) - Started by: [michaeleasycount](https://wordpress.org/support/users/michaeleasycount/) - 2 - 13 - [7 years, 1 month ago](https://wordpress.org/support/topic/gzip-disabled-again/#post-11434471) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [I can not compress GZIP to CDN](https://wordpress.org/support/topic/i-can-not-compress-gzip-to-cdn/) - Started by: [tiicaa](https://wordpress.org/support/users/tiicaa/) - 2 - 1 - [7 years, 1 month ago](https://wordpress.org/support/topic/i-can-not-compress-gzip-to-cdn/#post-11411101) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [PERFORMANCE TEST NEW TEST](https://wordpress.org/support/topic/performance-test-new-test/) - Started by: [tiicaa](https://wordpress.org/support/users/tiicaa/) - 3 - 4 - [7 years ago](https://wordpress.org/support/topic/performance-test-new-test/#post-11451875) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [Clear cache after receiving comments](https://wordpress.org/support/topic/clear-cache-after-receiving-comments/) - Started by: [Christian Hockenberger](https://wordpress.org/support/users/chrisbergr/) - 3 - 8 - [6 years, 11 months ago](https://wordpress.org/support/topic/clear-cache-after-receiving-comments/#post-11584635) - [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * - [Remove render blocking resources](https://wordpress.org/support/topic/remove-render-blocking-resources-2/) - Started by: [themightydvir](https://wordpress.org/support/users/themightydvir/) - 2 - 2 - [7 years ago](https://wordpress.org/support/topic/remove-render-blocking-resources-2/#post-11451872) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [Server type](https://wordpress.org/support/topic/server-type/) - Started by: [moanja](https://wordpress.org/support/users/moanja/) - 3 - 2 - [7 years, 1 month ago](https://wordpress.org/support/topic/server-type/#post-11422662) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [Error: Cloudflare error: Missing X-Auth-Email header [403]](https://wordpress.org/support/topic/error-cloudflare-error-missing-x-auth-email-header-403/) - Started by: [Hrishikesh](https://wordpress.org/support/users/hrishikeshbharaligmailcom/) - 2 - 9 - [7 years, 1 month ago](https://wordpress.org/support/topic/error-cloudflare-error-missing-x-auth-email-header-403/#post-11386131) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [Hummingbird breask yoast meta description](https://wordpress.org/support/topic/hummingbird-breask-yoast-meta-description/) - Started by: [flaiho](https://wordpress.org/support/users/flaiho/) - 1 - 1 - [7 years, 1 month ago](https://wordpress.org/support/topic/hummingbird-breask-yoast-meta-description/#post-11377621) - [flaiho](https://wordpress.org/support/users/flaiho/) * - [Hummingbird breaks Thrive Quiz](https://wordpress.org/support/topic/hummingbird-breaks-thrive-quiz/) - Started by: [twilliamsa](https://wordpress.org/support/users/twilliamsa/) - 3 - 2 - [7 years, 1 month ago](https://wordpress.org/support/topic/hummingbird-breaks-thrive-quiz/#post-11400943) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [Can’t Run Test](https://wordpress.org/support/topic/cant-run-test-2/) - Started by: [cnbrockett](https://wordpress.org/support/users/cnbrockett/) - 2 - 1 - [7 years, 1 month ago](https://wordpress.org/support/topic/cant-run-test-2/#post-11367725) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [Hummingbird Activated, but not caching](https://wordpress.org/support/topic/hummingbird-activated-but-not-caching/) - Started by: [ChampagnePapi](https://wordpress.org/support/users/carnimeoandrea/) - 3 - 13 - [7 years, 1 month ago](https://wordpress.org/support/topic/hummingbird-activated-but-not-caching/#post-11400941) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [Can’t access SmartCrawl, Hummingbird and Smush](https://wordpress.org/support/topic/cant-access-smartcrawl-hummingbird-and-smush/) - Started by: [adesjeep](https://wordpress.org/support/users/adesjeep/) - 3 - 3 - [7 years, 1 month ago](https://wordpress.org/support/topic/cant-access-smartcrawl-hummingbird-and-smush/#post-11344610) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [problem with order page (check out)](https://wordpress.org/support/topic/problem-with-order-page-check-out/) - Started by: [varfolomeeva](https://wordpress.org/support/users/varfolomeeva/) - 3 - 3 - [7 years, 1 month ago](https://wordpress.org/support/topic/problem-with-order-page-check-out/#post-11400937) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [deactivate plugin](https://wordpress.org/support/topic/deactivate-plugin-10/) - Started by: [memo0](https://wordpress.org/support/users/memo0/) - 3 - 2 - [7 years, 1 month ago](https://wordpress.org/support/topic/deactivate-plugin-10/#post-11400936) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) *   [←](https://wordpress.org/support/plugin/hummingbird-performance/page/32/?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)… [32](https://wordpress.org/support/plugin/hummingbird-performance/page/32/?output_format=md) 33 [34](https://wordpress.org/support/plugin/hummingbird-performance/page/34/?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/34/?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/)