Title: CSS JS Manager, Async JavaScript, Defer Render Blocking CSS Author: PI Web Solution Published: January 31, 2019 Last modified: April 2, 2026 --- Search plugins ![](https://ps.w.org/css-js-manager/assets/banner-772x250.png?rev=3415127) ![](https://ps.w.org/css-js-manager/assets/icon.svg?rev=2540651) # CSS JS Manager, Async JavaScript, Defer Render Blocking CSS By [PI Web Solution](https://profiles.wordpress.org/rajeshsingh520/) [Download](https://downloads.wordpress.org/plugin/css-js-manager.2.4.49.70.zip) * [Details](https://wordpress.org/plugins/css-js-manager/#description) * [Reviews](https://wordpress.org/plugins/css-js-manager/#reviews) * [Development](https://wordpress.org/plugins/css-js-manager/#developers) [Support](https://wordpress.org/support/plugin/css-js-manager/) ## Description [Documentation](https://www.piwebsolution.com/css-js-manager-documentation/) * Load / remove css or js if the request is from a mobile device * Load / remove css or js if the request is from a desktop device * Defer Loading of CSS file * Load any JS file Async or Defer * Remove any JS from all the pages, or on some pages based on various conditional rules * Remove any CSS file from all the pages, or on some pages based on various conditional rules * Async any JS file on all the pages or on selective pages * You can remove or add JS file based on post type * You can remove or add CSS file based on post type * You can remove or add JS file based on page id * You can remove or add CSS file based on page id ### Manage critical css Now you can load different critical css for different pages or post or custom post type and optimize your site for speed > Step 1: Go to CSS JS Manager >> Critical CSS setting > select the post type where > you want to use the Critical CSS, Say you want to use it on Post, Product > Step 2: go to Critical CSS >> Add New Critical css > you can add as many critical > css as you want Say you want to have Different critical css for home page, and > post, and product so you will create 3 different critical css and load the critical > css There > Use this to generate critical css https://www.sitelocity.com/critical-path-css- > generator > Step 3: Go to respective post or page where you will like to use those critical > css and select them ### How to Defer Render Blocking CSS using CSS JS Manager? ### How to remove CSS file from complete website or particular page? ### The same steps apply to JS as well just add JS link and select JS from the Drop drop down ### Premium support: We respond to all support topics within 24 hours ## Screenshots * [[ * [[ * [[ * [[ * [[ ## FAQ ### How to Defer Render Blocking CSS using CSS JS Manager? * Copy the URL of this file without the query string variable ( without this “? ver=5.0.3“ * URL: http://localhost/telco/wp-content/themes/twentyseventeen/style.css * Now Open the CSS JS Manager * Click on “Add New Resource” * Now add the URL from the Step 2 * Set method as “Async“ * Selection Logic “Add This“ * On All Pages ### How to remove CSS file from complete website? You have a css file that is not used in your website and you want to remove it from your website completely. you can do that easily. just follow all the steps given in the Defer process, you can keep the loading method as any thing (as it wont mater as the css will be removed) then at the bottom ### If you want to allow JS file on only few particular page and remove from all other All the steps remain same, You need to copy the JS file URL, Select Resource type as “JS” from the drop down. Select the method of the loading for the JS (it has Defer, Async, and normal) In selection logic click “Add this on” Click on “Selected Pages” In the Single Resource ID enter the Page id of the pages where you want this js to be allowed E,g: 1,2,22 this are the ID of the page where this js will be allowed to load an apart from this it wont load on any other page ### Does it support WooCommerce Yes, WooCommerce Page tags like is_product, is_category, is_cart, is_shop and other. So you can load or remove script specific to the WooCommerce page rules ### I want to remove the css if request is from mobile device Yes you can remove css or js based on the device if it is mobile or desktop ### I want to async a js file for mobile device Yes you can do that in the pro version ## Reviews ![](https://secure.gravatar.com/avatar/18df8bb3c16d6b9759fd4a5c7e7e0da1500f576bb63389c046aefe622e362383? s=60&d=retro&r=g) ### 󠀁[Excelente herramienta y muy intuitiva](https://wordpress.org/support/topic/excelente-herramienta-y-muy-intuitiva/)󠁿 [adrian](https://profiles.wordpress.org/claudiaflorj/) December 29, 2025 He probado varios gestores de código y este es, sin duda, uno de los más limpios y fáciles de usar. Cumple exactamente con lo que promete sin sobrecargar el sitio.¡ Muy recomendado! ![](https://secure.gravatar.com/avatar/cd4bf5ad28b1eb36e0cc0c73fda49a08bb6e024e8ee5e743eb0dca0c8e6080b1? s=60&d=retro&r=g) ### 󠀁[Good Plugin](https://wordpress.org/support/topic/good-plugin-7257/)󠁿 [pagrob](https://profiles.wordpress.org/pagrob/) December 19, 2025 This plugin works very well ![](https://secure.gravatar.com/avatar/54cc7bdf31fdf196ebfeca64b0def8c10c4be235ae7118c65853f449fa4ccf02? s=60&d=retro&r=g) ### 󠀁[Simple and useful](https://wordpress.org/support/topic/simple-and-useful-419/)󠁿 [cezaro](https://profiles.wordpress.org/cezaro/) December 14, 2025 I switched from another plugin to this one and I’m happy with how it works. ![](https://secure.gravatar.com/avatar/3a1c94a8037b93e439d69c5cab6a6183795c1079165bd0d4a2db33855673a144? s=60&d=retro&r=g) ### 󠀁[pretty cool](https://wordpress.org/support/topic/pretty-cool-65/)󠁿 [krzysztofsojski](https://profiles.wordpress.org/krzysztofsojski/) November 21, 2025 The plugin works fine. Although I don’t know why it doesn’t refresh the latest reviews. ![](https://secure.gravatar.com/avatar/fff3a50dde2809fd7e54ef4dcce8e68f4077fbe7901c4cd77173a412f888ad3f? s=60&d=retro&r=g) ### 󠀁[Awesome little plugin](https://wordpress.org/support/topic/awesome-little-plugin-19/)󠁿 [thomas20ss](https://profiles.wordpress.org/thomas20ss/) July 12, 2025 Let’s say it, I got it recommended by ChatGPT, as I asked for a lightweight plugin. Its simple and works great! Thank you!!!! ![](https://secure.gravatar.com/avatar/e23635b8d1c270f17a9db31a59f27deb84bc9b395174e090d03bec252a37418e? s=60&d=retro&r=g) ### 󠀁[Great for deferring auto added scripts](https://wordpress.org/support/topic/great-for-deferring-auto-added-scripts/)󠁿 [glyderau](https://profiles.wordpress.org/glyderau/) June 17, 2025 Seems to work very well, great when deferring scripts that are automatically added via plugins, etc. [ Read all 90 reviews ](https://wordpress.org/support/plugin/css-js-manager/reviews/) ## Contributors & Developers “CSS JS Manager, Async JavaScript, Defer Render Blocking CSS” is open source software. The following people have contributed to this plugin. Contributors * [ PI Web Solution ](https://profiles.wordpress.org/rajeshsingh520/) “CSS JS Manager, Async JavaScript, Defer Render Blocking CSS” has been translated into 2 locales. Thank you to [the translators](https://translate.wordpress.org/projects/wp-plugins/css-js-manager/contributors) for their contributions. [Translate “CSS JS Manager, Async JavaScript, Defer Render Blocking CSS” into your language.](https://translate.wordpress.org/projects/wp-plugins/css-js-manager) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/css-js-manager/), check out the [SVN repository](https://plugins.svn.wordpress.org/css-js-manager/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/css-js-manager/) by [RSS](https://plugins.trac.wordpress.org/log/css-js-manager/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 2.4.49.60 * Css JS Manager tested for WC 10.0.2 #### 2.4.49.47 * Tested for WP 6.8.0 * React braking admin panel fixed #### 2.4.49.39 * Tested for WC 9.4.0 #### 2.4.49.37 * Tested for WP 6.7.0 #### 2.4.49.36 * Tested for WC 9.3.3 #### 2.4.49.32 * Tested for WC 9.1.4 #### 2.4.49.31 * Tested for WC 9.1.0 #### 2.4.49.30 * Tested for WP 6.6.1 #### 2.4.49.20 * HPOS compatible ## Meta * Version **2.4.49.70** * Last updated **2 weeks ago** * Active installations **1,000+** * WordPress version ** 3.0.1 or higher ** * Tested up to **6.9.4** * Languages * [English (US)](https://wordpress.org/plugins/css-js-manager/), [Spanish (Spain)](https://es.wordpress.org/plugins/css-js-manager/), and [Swedish](https://sv.wordpress.org/plugins/css-js-manager/). * [Translate into your language](https://translate.wordpress.org/projects/wp-plugins/css-js-manager) * Tags * [async css](https://wordpress.org/plugins/tags/async-css/)[async js](https://wordpress.org/plugins/tags/async-js/) [defer css](https://wordpress.org/plugins/tags/defer-css/)[Defer JS](https://wordpress.org/plugins/tags/defer-js/) [pagespeed](https://wordpress.org/plugins/tags/pagespeed/) * [Advanced View](https://wordpress.org/plugins/css-js-manager/advanced/) ## Ratings 4.8 out of 5 stars. * [ 84 5-star reviews ](https://wordpress.org/support/plugin/css-js-manager/reviews/?filter=5) * [ 2 4-star reviews ](https://wordpress.org/support/plugin/css-js-manager/reviews/?filter=4) * [ 0 3-star reviews ](https://wordpress.org/support/plugin/css-js-manager/reviews/?filter=3) * [ 0 2-star reviews ](https://wordpress.org/support/plugin/css-js-manager/reviews/?filter=2) * [ 4 1-star reviews ](https://wordpress.org/support/plugin/css-js-manager/reviews/?filter=1) [Your review](https://wordpress.org/support/plugin/css-js-manager/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/css-js-manager/reviews/) ## Contributors * [ PI Web Solution ](https://profiles.wordpress.org/rajeshsingh520/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/css-js-manager/) ## Donate Would you like to support the advancement of this plugin? [ Donate to this plugin ](http://piwebsolution.com)