Title: Autoptimize creates big renderblocking css file Last modified: November 6, 2024 --- # Autoptimize creates big renderblocking css file * Resolved [anm](https://wordpress.org/support/users/ahuk/) * (@ahuk) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/) * Hi, * I have recently added Autoptimize to my site and I have noticed it creates a big render-blocking css file, which delays my LCP from loading. * is there any way to make it so it s not render-blocking, or to split it up somehow? * Thank you! Viewing 15 replies - 1 through 15 (of 36 total) 1 [2](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/page/2/?output_format=md) [3](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/page/3/?output_format=md) [→](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/page/2/?output_format=md) * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/#post-18118513) * splitting up is easy; simply don’t activate the “aggregate CSS” option. * not making it render-blocking is also possible, using the “eliminate render-blocking CSS” option, but in that case you will either have to; - add “above the fold CSS” in the field below, see the FAQ for info no how to generate that - OR go to the “critical CSS” tab and create manual rules for different types of pages and add the critical CSS for those using the same tools as in the previous option - OR take a subscription at criticalcss.com OR consider buying an Autoptimize Pro subscription, in both case these can automatically create critical CSS rules * hope this helps, frank * Thread Starter [anm](https://wordpress.org/support/users/ahuk/) * (@ahuk) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/#post-18118751) * thank you for the quick reply! * Are there advantages in aggregating the CSS, or is it better to split it? How about inlining the CSS in the HTML? * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/#post-18118774) * aggregating is less important now that HTTP/2 is (almost) always available at server level. * I would however advice against inlining all; it makes the HTML bulky and makes the CSS not cache-able, so it can even make the site slower instead of faster in some cases. * Thread Starter [anm](https://wordpress.org/support/users/ahuk/) * (@ahuk) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/#post-18119435) * I am using “eliminate render blocking” with the criticalcss subscription, but they are still render blocking 🙁 * Thread Starter [anm](https://wordpress.org/support/users/ahuk/) * (@ahuk) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/#post-18119443) * These are the settings I have Enabled: * Optimise Java Script Code? ON * Aggregate JS files? ON * Exclude scripts from Autoptimize: , wp-includes/js * Optimise CSS Code? ON * Aggregate CSS files? ON * Eliminate render-blocking CSS? ON * Exclude CSS from Autoptimize: , admin-bar.min.css, dashicons.min.css, wp-content/ cache/, wp-content/uploads/ * Optimise HTML Code? ON * Also minify inline JS/ CSS? ON * Is there anything I can change in order to make the CSS not render blocking, or to improve the rendering speed ? I’m trying to decrease the render delay for the LCP. * Thank you! * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/#post-18119469) * can you share your site’s URL [@ahuk](https://wordpress.org/support/users/ahuk/) so I can have a look at the resulting HTML ? * Thread Starter [anm](https://wordpress.org/support/users/ahuk/) * (@ahuk) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/#post-18119732) * Sure, [this is the site](https://mobileautomechanic.co.uk/) * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/#post-18119740) * when you go to Settings -> Autoptimize -> Critical CSS, do you see (AUTO) rules there? * Thread Starter [anm](https://wordpress.org/support/users/ahuk/) * (@ahuk) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/#post-18119837) * there is nothing under “Rules”, there is only stuff under “Job queue” * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/#post-18119847) * can you click on the “process queue manually” beneath the job queue? and a couple of minutes later press it again? * Thread Starter [anm](https://wordpress.org/support/users/ahuk/) * (@ahuk) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/#post-18119886) * i clicked like you said, and now stuff started to appear under Rules 🙂 * but it also says this: * 1 of the above rules got flagged by criticalcss.com as possibly needing review. This is often due to font-related issues which can be safely ignored, but in case of doubt do a visual test or check for Cumulative Layout Shift issues in e.g. Pagespeed Insights.Dismiss this notice. * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/#post-18119968) * OK, so what rules do you see Ahuk? * Thread Starter [anm](https://wordpress.org/support/users/ahuk/) * (@ahuk) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/#post-18119971) * only these: * Path Based Rules * **AUTO**[/car-battery-replacement/pentre-du/clwyd](https://mobileautomechanic.co.uk/car-battery-replacement/pentre-du/clwyd) ccss_53d7f604759c0282ad22e345d67d51ae.cssEditRemove * **AUTO**[/car-battery-replacement/noss-mayo/devon](https://mobileautomechanic.co.uk/car-battery-replacement/noss-mayo/devon) ccss_1b9a7caa288f2071b264886bee4c42b0.cssEditRemove * Conditional Tags, Custom Post Types and Page Templates RulesTypeTargetCritical CSS FileActions * **AUTO**is_front_pageccss_8baf723b8f7e878450e9474df0d72bcc_R.cssEditRemove * 1 of the above rules got flagged by criticalcss.com as possibly needing review. This is often due to font-related issues which can be safely ignored, but in case of doubt do a visual test or check for Cumulative Layout Shift issues in e.g. Pagespeed Insights. * Thread Starter [anm](https://wordpress.org/support/users/ahuk/) * (@ahuk) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/#post-18119979) * but theres many many items in the Job queue section. * so it looks like if i press “Manually procss job queue”, one item is moved from Job queue into Rules * Thread Starter [anm](https://wordpress.org/support/users/ahuk/) * (@ahuk) * [1 year, 7 months ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/#post-18119981) * do i have to Manually process all of them? Viewing 15 replies - 1 through 15 (of 36 total) 1 [2](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/page/2/?output_format=md) [3](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/page/3/?output_format=md) [→](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/page/2/?output_format=md) The topic ‘Autoptimize creates big renderblocking css file’ 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/) * 36 replies * 3 participants * Last reply from: [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * Last activity: [1 year, 1 month ago](https://wordpress.org/support/topic/autoptimize-creates-big-renderblocking-css-file/page/3/#post-18437790) * Status: resolved