Title: [Hummingbird Performance - Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN] Support - page 30 | 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%2F30%2F%3Foutput_format%3Dmd&locale=en_US) [←](https://wordpress.org/support/plugin/hummingbird-performance/page/29/?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)… [29](https://wordpress.org/support/plugin/hummingbird-performance/page/29/?output_format=md) 30 [31](https://wordpress.org/support/plugin/hummingbird-performance/page/31/?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/31/?output_format=md) - Topic - Participants - Replies - Last Post * - [Cache not emptying with new posts and some links not working](https://wordpress.org/support/topic/cache-not-emptying-with-new-posts-and-some-links-not-working/) - Started by: [mediamatters2020](https://wordpress.org/support/users/mediamatters2020/) - 2 - 5 - [6 years, 5 months ago](https://wordpress.org/support/topic/cache-not-emptying-with-new-posts-and-some-links-not-working/#post-12152372) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [bunch of warnings at the top of home page](https://wordpress.org/support/topic/bunch-of-warnings-at-the-top-of-home-page/) - Started by: [sailors](https://wordpress.org/support/users/sailors/) - 6 - 8 - [6 years, 6 months ago](https://wordpress.org/support/topic/bunch-of-warnings-at-the-top-of-home-page/#post-12125651) - [sailors](https://wordpress.org/support/users/sailors/) * - [Module mod_expires and Module mod_headers.](https://wordpress.org/support/topic/module-mod_expires-and-module-mod_headers/) - Started by: [mjoly2000](https://wordpress.org/support/users/mjoly2000/) - 2 - 1 - [6 years, 6 months ago](https://wordpress.org/support/topic/module-mod_expires-and-module-mod_headers/#post-12119843) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [Hummingbird Performance Test](https://wordpress.org/support/topic/hummingbird-performance-test/) - Started by: [cnickerson2011](https://wordpress.org/support/users/cnickerson2011/) - 3 - 6 - [6 years, 6 months ago](https://wordpress.org/support/topic/hummingbird-performance-test/#post-12107646) - [cnickerson2011](https://wordpress.org/support/users/cnickerson2011/) * - [remove html comment tag](https://wordpress.org/support/topic/remove-html-comment-tag/) - Started by: [multidimentional](https://wordpress.org/support/users/multidimentional/) - 2 - 1 - [6 years, 6 months ago](https://wordpress.org/support/topic/remove-html-comment-tag/#post-12092805) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [How to eliminate render blocking resources?](https://wordpress.org/support/topic/how-to-eliminate-render-blocking-resources/) - Started by: [Gemini23](https://wordpress.org/support/users/gemini23/) - 2 - 1 - [6 years, 6 months ago](https://wordpress.org/support/topic/how-to-eliminate-render-blocking-resources/#post-12085609) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [“Browser Caching is not working properly:”](https://wordpress.org/support/topic/browser-caching-is-not-working-properly-5/) - Started by: [thurteenthfloorsupport](https://wordpress.org/support/users/thurteenthfloorsupport/) - 2 - 5 - [6 years, 6 months ago](https://wordpress.org/support/topic/browser-caching-is-not-working-properly-5/#post-12059890) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [My sites broke](https://wordpress.org/support/topic/my-sites-broke/) - Started by: [mniqbal](https://wordpress.org/support/users/mniqbal/) - 2 - 1 - [6 years, 6 months ago](https://wordpress.org/support/topic/my-sites-broke/#post-12056647) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [SSL Error from Hummingbird Script](https://wordpress.org/support/topic/ssl-error-from-hummingbird-script/) - Started by: [2chicks](https://wordpress.org/support/users/2chicks/) - 3 - 4 - [6 years, 6 months ago](https://wordpress.org/support/topic/ssl-error-from-hummingbird-script/#post-12070453) - [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * - [varnish and hummingbird](https://wordpress.org/support/topic/varnish-and-hummingbird/) - Started by: [ridestoke](https://wordpress.org/support/users/ridestoke/) - 2 - 2 - [6 years, 7 months ago](https://wordpress.org/support/topic/varnish-and-hummingbird/#post-12017587) - [Laura – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support8/) * - [Test failure](https://wordpress.org/support/topic/test-failure-3/) - Started by: [mattkwa](https://wordpress.org/support/users/mattkwa/) - 3 - 4 - [6 years, 7 months ago](https://wordpress.org/support/topic/test-failure-3/#post-12023819) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [Separate Mobile Cache](https://wordpress.org/support/topic/separate-mobile-cache/) - Started by: [oksanaromaniv](https://wordpress.org/support/users/oksanaromaniv/) - 3 - 2 - [6 years, 7 months ago](https://wordpress.org/support/topic/separate-mobile-cache/#post-12023820) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [Persistent missing files](https://wordpress.org/support/topic/persistent-missing-files/) - Started by: [YSMR](https://wordpress.org/support/users/ysmr/) - 2 - 4 - [6 years, 5 months ago](https://wordpress.org/support/topic/persistent-missing-files/#post-12161393) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [Preload CPU usage](https://wordpress.org/support/topic/preload-cpu-usage/) - Started by: [gavpedz](https://wordpress.org/support/users/gavpedz/) - 3 - 2 - [6 years, 7 months ago](https://wordpress.org/support/topic/preload-cpu-usage/#post-12023823) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [Hummingbird is NOT removing all its settings when removed](https://wordpress.org/support/topic/hummingbird-is-not-removing-all-its-settings-when-removed/) - Started by: [Norman Cates](https://wordpress.org/support/users/normancates/) - 3 - 2 - [6 years, 7 months ago](https://wordpress.org/support/topic/hummingbird-is-not-removing-all-its-settings-when-removed/#post-12023824) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [Does Purge OpCache improve TTFB?](https://wordpress.org/support/topic/does-purge-opcache-improve-ttfb/) - Started by: [sailors](https://wordpress.org/support/users/sailors/) - 2 - 3 - [6 years, 7 months ago](https://wordpress.org/support/topic/does-purge-opcache-improve-ttfb/#post-11991815) - [sailors](https://wordpress.org/support/users/sailors/) * - [Asset Optimization doesn’t work](https://wordpress.org/support/topic/asset-optimization-doesnt-work/) - Started by: [nozzax](https://wordpress.org/support/users/nozzax/) - 4 - 4 - [6 years, 7 months ago](https://wordpress.org/support/topic/asset-optimization-doesnt-work/#post-12033817) - [Saurabh – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support7/) * - [Debug show warning](https://wordpress.org/support/topic/debug-show-warning/) - Started by: [Jorge Dominguez](https://wordpress.org/support/users/animerd/) - 3 - 2 - [6 years, 7 months ago](https://wordpress.org/support/topic/debug-show-warning/#post-12001177) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [Can not decode raw data](https://wordpress.org/support/topic/can-not-decode-raw-data/) - Started by: [katjavolker](https://wordpress.org/support/users/katjavolker/) - 4 - 6 - [6 years, 7 months ago](https://wordpress.org/support/topic/can-not-decode-raw-data/#post-12023817) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [Body Missing “logged-in” class – Admin Only Elements not Visible](https://wordpress.org/support/topic/body-missing-logged-in-class-admin-only-elements-not-visible/) - Started by: [bryanvandy](https://wordpress.org/support/users/bryanvandy/) - 3 - 2 - [6 years, 7 months ago](https://wordpress.org/support/topic/body-missing-logged-in-class-admin-only-elements-not-visible/#post-12001178) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [Fatal error causing wordpress wp-admin login crashed](https://wordpress.org/support/topic/fatal-error-causing-wordpress-wp-admin-login-crashed-2/) - Started by: [clboyse](https://wordpress.org/support/users/clboyse/) - 3 - 2 - [6 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-causing-wordpress-wp-admin-login-crashed-2/#post-12001180) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [Footer errors: Warning: Cannot modify header information – headers already sent](https://wordpress.org/support/topic/footer-errors-warning-cannot-modify-header-information-headers-already-sent/) - Started by: [carolinainbound](https://wordpress.org/support/users/carolinainbound/) - 3 - 2 - [6 years, 7 months ago](https://wordpress.org/support/topic/footer-errors-warning-cannot-modify-header-information-headers-already-sent/#post-12001181) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [class-minify-group.php warning](https://wordpress.org/support/topic/class-minify-group-php-warning/) - Started by: [sailors](https://wordpress.org/support/users/sailors/) - 2 - 2 - [6 years, 8 months ago](https://wordpress.org/support/topic/class-minify-group-php-warning/#post-11951292) - [sailors](https://wordpress.org/support/users/sailors/) * - [Hummingbird speed testing](https://wordpress.org/support/topic/hummingbird-speed-testing/) - Started by: [ridestoke](https://wordpress.org/support/users/ridestoke/) - 2 - 10 - [6 years, 8 months ago](https://wordpress.org/support/topic/hummingbird-speed-testing/#post-11938631) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [Strange error message: SyntaxError: JSON Parse error: Unexpected EOF](https://wordpress.org/support/topic/strange-error-message-syntaxerror-json-parse-error-unexpected-eof/) - Started by: [Emmageddon](https://wordpress.org/support/users/emmageddon/) - 3 - 6 - [6 years, 7 months ago](https://wordpress.org/support/topic/strange-error-message-syntaxerror-json-parse-error-unexpected-eof/#post-12027776) - [Emmageddon](https://wordpress.org/support/users/emmageddon/) * - [Deferred Assets Not Removed from Audit](https://wordpress.org/support/topic/deferred-assets-not-removed-from-audit/) - Started by: [toxoplasmaarts](https://wordpress.org/support/users/toxoplasmaarts/) - 2 - 6 - [6 years, 8 months ago](https://wordpress.org/support/topic/deferred-assets-not-removed-from-audit/#post-11940772) - [toxoplasmaarts](https://wordpress.org/support/users/toxoplasmaarts/) * - [Compressed assets not found](https://wordpress.org/support/topic/compressed-assets-not-found/) - Started by: [gchartier](https://wordpress.org/support/users/gchartier/) - 2 - 1 - [6 years, 8 months ago](https://wordpress.org/support/topic/compressed-assets-not-found/#post-11934684) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [Asset Optimization runs in loop](https://wordpress.org/support/topic/asset-optimization-runs-in-loop/) - Started by: [lh23](https://wordpress.org/support/users/lh23/) - 3 - 4 - [6 years, 7 months ago](https://wordpress.org/support/topic/asset-optimization-runs-in-loop/#post-12001190) - [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * - [Warning: Zend OPcache API is restricted by “restrict_api”](https://wordpress.org/support/topic/warning-zend-opcache-api-is-restricted-by-restrict_api/) - Started by: [bonsaigil](https://wordpress.org/support/users/bonsaigil/) - 4 - 4 - [6 years, 7 months ago](https://wordpress.org/support/topic/warning-zend-opcache-api-is-restricted-by-restrict_api/#post-12007851) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * - [PHP Warnings](https://wordpress.org/support/topic/php-warnings-85/) - Started by: [amaucep](https://wordpress.org/support/users/amaucep/) - 2 - 1 - [6 years, 8 months ago](https://wordpress.org/support/topic/php-warnings-85/#post-11923488) - [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) *   [←](https://wordpress.org/support/plugin/hummingbird-performance/page/29/?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)… [29](https://wordpress.org/support/plugin/hummingbird-performance/page/29/?output_format=md) 30 [31](https://wordpress.org/support/plugin/hummingbird-performance/page/31/?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/31/?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/)