Title: [Jetpack Boost - Website Speed, Performance and Critical CSS] Support - page 3 | WordPress.org --- # [Jetpack Boost - Website Speed, Performance and Critical CSS] Support Search for: [Log in to Create a Topic](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Fplugin%2Fjetpack-boost%2Fpage%2F3%2F%3Foutput_format%3Dmd&locale=en_US) [←](https://wordpress.org/support/plugin/jetpack-boost/page/2/?output_format=md) [1](https://wordpress.org/support/plugin/jetpack-boost/?output_format=md) [2](https://wordpress.org/support/plugin/jetpack-boost/page/2/?output_format=md) 3 [4](https://wordpress.org/support/plugin/jetpack-boost/page/4/?output_format=md)… [22](https://wordpress.org/support/plugin/jetpack-boost/page/22/?output_format=md) [23](https://wordpress.org/support/plugin/jetpack-boost/page/23/?output_format=md) [24](https://wordpress.org/support/plugin/jetpack-boost/page/24/?output_format=md) [→](https://wordpress.org/support/plugin/jetpack-boost/page/4/?output_format=md) - Topic - Participants - Replies - Last Post * - [Issue with Optimize Critical CSS Loading](https://wordpress.org/support/topic/issue-with-optimize-critical-css-loading/) - Started by: [Manthan Kanani](https://wordpress.org/support/users/manthankanani/) - 7 - 9 - [1 year, 2 months ago](https://wordpress.org/support/topic/issue-with-optimize-critical-css-loading/#post-18351675) - [Manthan Kanani](https://wordpress.org/support/users/manthankanani/) * - [Failed to generate Critical CSS An unexpected error has occurred. As this error](https://wordpress.org/support/topic/failed-to-generate-critical-css-an-unexpected-error-has-occurred-as-this-error/) - Started by: [smiebuffalo0](https://wordpress.org/support/users/smiebuffalo0/) - 2 - 1 - [1 year, 3 months ago](https://wordpress.org/support/topic/failed-to-generate-critical-css-an-unexpected-error-has-occurred-as-this-error/#post-18325414) - [Pete (a11n)](https://wordpress.org/support/users/dilirity/) * - [Clearing CSS/JS assets’ cache… Please wait until this notice disappears…](https://wordpress.org/support/topic/clearing-css-js-assets-cache-please-wait-until-this-notice-disappears/) - Started by: [lanostraterra](https://wordpress.org/support/users/lanostraterra/) - 2 - 1 - [1 year, 3 months ago](https://wordpress.org/support/topic/clearing-css-js-assets-cache-please-wait-until-this-notice-disappears/#post-18324295) - [Donncha O Caoimh (a11n)](https://wordpress.org/support/users/donncha/) * - [Failed To Generate Critical CSS [error code:contact support]](https://wordpress.org/support/topic/failed-to-generate-critical-css-error-codecontact-support/) - Started by: [casualblue](https://wordpress.org/support/users/casualblue/) - 4 - 3 - [1 year, 3 months ago](https://wordpress.org/support/topic/failed-to-generate-critical-css-error-codecontact-support/#post-18346289) - [Chatoxz (a11n)](https://wordpress.org/support/users/chatoxz/) * - [Remove my CDN Cache data](https://wordpress.org/support/topic/remove-my-cdn-cache-data/) - Started by: [tedyxavier16](https://wordpress.org/support/users/tedyxavier16/) - 2 - 4 - [1 year, 3 months ago](https://wordpress.org/support/topic/remove-my-cdn-cache-data/#post-18326455) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [lines appearing on website after clicking jetpack boost](https://wordpress.org/support/topic/lines-appearing-on-website-after-clicking-jetpack-boost/) - Started by: [fapp](https://wordpress.org/support/users/fapp/) - 2 - 2 - [1 year, 3 months ago](https://wordpress.org/support/topic/lines-appearing-on-website-after-clicking-jetpack-boost/#post-18319715) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [Critical impact on site performance by Image CDN](https://wordpress.org/support/topic/critical-impact-on-site-performance-by-image-cdn/) - Started by: [calyponte](https://wordpress.org/support/users/calyponte/) - 2 - 1 - [1 year, 3 months ago](https://wordpress.org/support/topic/critical-impact-on-site-performance-by-image-cdn/#post-18306722) - [Chatoxz (a11n)](https://wordpress.org/support/users/chatoxz/) * - [Failed to generate Critical CSS Hmm, looks like something went wrong. We’re sti](https://wordpress.org/support/topic/failed-to-generate-critical-css-hmm-looks-like-something-went-wrong-were-sti/) - Started by: [Scoutsadmin](https://wordpress.org/support/users/scoutsadmin/) - 3 - 2 - [1 year, 3 months ago](https://wordpress.org/support/topic/failed-to-generate-critical-css-hmm-looks-like-something-went-wrong-were-sti/#post-18319714) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [CSS Critical !important](https://wordpress.org/support/topic/css-critical-important/) - Started by: [Guillermo](https://wordpress.org/support/users/guillermo77/) - 2 - 1 - [1 year, 3 months ago](https://wordpress.org/support/topic/css-critical-important/#post-18299662) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [Warnings & ‘data-jetpack-boost’ parameter is not working](https://wordpress.org/support/topic/warnings-defer-parameter-is-not-working/) - Started by: [FARAZFRANK](https://wordpress.org/support/users/farazfrank/) - 3 - 6 - [1 year, 3 months ago](https://wordpress.org/support/topic/warnings-defer-parameter-is-not-working/#post-18338140) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [“Defer Non-Essential JavaScript” hinders plugin Filter Gallery Pro](https://wordpress.org/support/topic/defer-non-essential-javascript-hinders-plugin-filter-gallery-pro/) - Started by: [ylara](https://wordpress.org/support/users/ylara/) - 3 - 3 - [1 year, 3 months ago](https://wordpress.org/support/topic/defer-non-essential-javascript-hinders-plugin-filter-gallery-pro/#post-18303292) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [Failed to generate Critical CSS](https://wordpress.org/support/topic/failed-to-generate-critical-css-106/) - Started by: [Angie Simons](https://wordpress.org/support/users/skyetek/) - 2 - 2 - [1 year, 3 months ago](https://wordpress.org/support/topic/failed-to-generate-critical-css-106/#post-18303207) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [Failed to generate Critical CSS](https://wordpress.org/support/topic/failed-to-generate-critical-css-105/) - Started by: [ibccshop](https://wordpress.org/support/users/ibccshop/) - 2 - 1 - [1 year, 4 months ago](https://wordpress.org/support/topic/failed-to-generate-critical-css-105/#post-18287746) - [Chatoxz (a11n)](https://wordpress.org/support/users/chatoxz/) * - [“expected dimensions”?](https://wordpress.org/support/topic/expected-dimensions/) - Started by: [hmijail](https://wordpress.org/support/users/hmijail/) - 2 - 2 - [1 year, 3 months ago](https://wordpress.org/support/topic/expected-dimensions/#post-18297966) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [Regarding the issue of CSS concatenation function](https://wordpress.org/support/topic/regarding-the-issue-of-css-concatenation-function-2/) - Started by: [Kodo](https://wordpress.org/support/users/cck23/) - 2 - 1 - [1 year, 4 months ago](https://wordpress.org/support/topic/regarding-the-issue-of-css-concatenation-function-2/#post-18276399) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [About page cache times and config.wp](https://wordpress.org/support/topic/about-page-cache-times-and-config-wp/) - Started by: [Guillermo](https://wordpress.org/support/users/guillermo77/) - 5 - 10 - [1 year, 3 months ago](https://wordpress.org/support/topic/about-page-cache-times-and-config-wp/#post-18296593) - [Guillermo](https://wordpress.org/support/users/guillermo77/) * - [Unable to generate critical CSS](https://wordpress.org/support/topic/unable-to-generate-critical-css-3/) - Started by: [nukt0wn](https://wordpress.org/support/users/nukt0wn/) - 3 - 2 - [1 year, 4 months ago](https://wordpress.org/support/topic/unable-to-generate-critical-css-3/#post-18285772) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [Generate Critical CSS makes webinar room fail, 2 Cornerstone Page would be nice.](https://wordpress.org/support/topic/generate-critical-css-makes-webinar-room-fail-2-critical-pages-would-be-nice/) - Started by: [Saleswonder Support Team](https://wordpress.org/support/users/subscribetech/) - 2 - 2 - [1 year, 4 months ago](https://wordpress.org/support/topic/generate-critical-css-makes-webinar-room-fail-2-critical-pages-would-be-nice/#post-18283233) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [image jumping up and down](https://wordpress.org/support/topic/image-jumping-up-and-down/) - Started by: [silvia46647](https://wordpress.org/support/users/silvia46647/) - 2 - 2 - [1 year, 4 months ago](https://wordpress.org/support/topic/image-jumping-up-and-down/#post-18245728) - [lastsplash (a11n)](https://wordpress.org/support/users/lastsplash/) * - [Error WP Super Cache](https://wordpress.org/support/topic/error-wp-super-cache-2/) - Started by: [Albert](https://wordpress.org/support/users/mf1995/) - 2 - 1 - [1 year, 4 months ago](https://wordpress.org/support/topic/error-wp-super-cache-2/#post-18233519) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [Boost](https://wordpress.org/support/topic/boost-6/) - Started by: [Owen](https://wordpress.org/support/users/owencerijones/) - 3 - 3 - [1 year, 4 months ago](https://wordpress.org/support/topic/boost-6/#post-18246864) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [Failed to generate Critical CSS](https://wordpress.org/support/topic/failed-to-generate-critical-css-104/) - Started by: [pmcgavock](https://wordpress.org/support/users/pmcgavock/) - 5 - 12 - [1 year, 4 months ago](https://wordpress.org/support/topic/failed-to-generate-critical-css-104/#post-18246054) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [[NSFW] Error: Expected an associative array, received ‘NULL’](https://wordpress.org/support/topic/error-expected-an-associative-array-received-null/) - Started by: [arief051294](https://wordpress.org/support/users/arief051294/) - 3 - 2 - [1 year, 4 months ago](https://wordpress.org/support/topic/error-expected-an-associative-array-received-null/#post-18242386) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [Jet pack fails to recreate critical CSS](https://wordpress.org/support/topic/jet-pack-fails-to-recreate-critical-css/) - Started by: [malagasylisa](https://wordpress.org/support/users/malagasylisa/) - 3 - 7 - [1 year, 5 months ago](https://wordpress.org/support/topic/jet-pack-fails-to-recreate-critical-css/#post-18230478) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [Major CSS regeneration failed](https://wordpress.org/support/topic/major-css-regeneration-failed-3/) - Started by: [homaclife](https://wordpress.org/support/users/homaclife/) - 3 - 2 - [1 year, 5 months ago](https://wordpress.org/support/topic/major-css-regeneration-failed-3/#post-18221365) - [Tamirat B. (a11n)](https://wordpress.org/support/users/tamirat22/) * - [Failed to generate Critical CSS](https://wordpress.org/support/topic/failed-to-generate-critical-css-103/) - Started by: [marikotagawa](https://wordpress.org/support/users/marikotagawa/) - 2 - 8 - [1 year, 5 months ago](https://wordpress.org/support/topic/failed-to-generate-critical-css-103/#post-18200036) - [marikotagawa](https://wordpress.org/support/users/marikotagawa/) * - [Title: CSS Editor Adding Unwanted Formatting & Layout Shift Issues Persist](https://wordpress.org/support/topic/title-css-editor-adding-unwanted-formatting-layout-shift-issues-persist/) - Started by: [Devin104](https://wordpress.org/support/users/devin104/) - 4 - 7 - [1 year, 5 months ago](https://wordpress.org/support/topic/title-css-editor-adding-unwanted-formatting-layout-shift-issues-persist/#post-18216581) - [Tamirat B. (a11n)](https://wordpress.org/support/users/tamirat22/) * - [JetPack Image Analysis Tool](https://wordpress.org/support/topic/jetpack-image-analysis-tool/) - Started by: [Devin104](https://wordpress.org/support/users/devin104/) - 2 - 6 - [1 year, 5 months ago](https://wordpress.org/support/topic/jetpack-image-analysis-tool/#post-18192537) - [Tamirat B. (a11n)](https://wordpress.org/support/users/tamirat22/) * - [3.6.1 breaks CSS](https://wordpress.org/support/topic/3-6-1-breaks-css/) - Started by: [camfam](https://wordpress.org/support/users/camfam/) - 2 - 3 - [1 year, 6 months ago](https://wordpress.org/support/topic/3-6-1-breaks-css/#post-18169854) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * - [Critical CSS fails to regenerate](https://wordpress.org/support/topic/critical-css-fails-to-regenerate/) - Started by: [lingermagazine](https://wordpress.org/support/users/lingermagazine/) - 3 - 2 - [1 year, 6 months ago](https://wordpress.org/support/topic/critical-css-fails-to-regenerate/#post-18182117) - [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) *   [←](https://wordpress.org/support/plugin/jetpack-boost/page/2/?output_format=md) [1](https://wordpress.org/support/plugin/jetpack-boost/?output_format=md) [2](https://wordpress.org/support/plugin/jetpack-boost/page/2/?output_format=md) 3 [4](https://wordpress.org/support/plugin/jetpack-boost/page/4/?output_format=md)… [22](https://wordpress.org/support/plugin/jetpack-boost/page/22/?output_format=md) [23](https://wordpress.org/support/plugin/jetpack-boost/page/23/?output_format=md) [24](https://wordpress.org/support/plugin/jetpack-boost/page/24/?output_format=md) [→](https://wordpress.org/support/plugin/jetpack-boost/page/4/?output_format=md) * ![](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/)