wpsnoop: fix WP Critical CSS plugin conflicts, errors & issues

When the plugin WP Critical CSS conflicts or throws a PHP error we hope wpsnoop can help you to fix the issue quickly.


Discover which shortcodes wp-options PHP functions database tables and files are created by WP Critical CSS, plus learn which plugins and/or themes could be in conflict with WP Critical CSS.


Troubleshooting theme and plugin conflicts is easier when you know what WP Critical CSS leaves behind after uninstalling it from a WordPress installation, there is a list down below for your convenience.

Expert advice is recommended if you are not technically proficient with PHP, MySQL etc. View support options for WP Critical CSS

Get professional support for WP Critical CSS here

When you need professional help with WordPress: get help here


What does WP Critical CSS version 0.7.7 add to WordPress? Answers Here.

This is an automatically generated report - it is possible for WP Critical CSS to perform differently in your installation, previous versions before 0.7.7 may have created a different set of shortcodes, used different function names or could have created entirely different database tables to store settings and operate. This is not an exhaustive list but shows how version 0.7.7 of WP Critical CSS behaves when installed and removed on a clean installation of WordPress.

We have not tested individual shortcodes, features or settings of this plugin but instead have concentrated on the potential for obvious errors and conflicts which can occur, if you need help with the plugin in your local installation you can get WordPress help and support for WP Critical CSS by clicking here.

Our testing covered the free version of this plugin there may or may not be a paid version or premium version available for purchase that unlocks additional features and could behave in a slightly or very different manner.

Which new files does WP Critical CSS add to WordPress?

This section will populate with a table showing an icon, size and filepath.

Type & Path Size Conflicts
wp-content/plugins/wp-criticalcss/ 289.68kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/composer.json 369.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/composer.lock 7.39kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/config_prod.php 291.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/ 130.87kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/integrations/ No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/ 130.87kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS.php 8.57kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/ 122.29kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Admin/ 21.32kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Admin/UI.php 14.78kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Admin/UI/ 6.54kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Admin/UI/Post.php 3.68kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Admin/UI/Term.php 2.87kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/API.php 3.76kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/API/ 4.18kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/API/Background/ 4.18kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/API/Background/Process.php 4.18kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Background/ 6.84kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Background/ProcessAbstract.php 6.84kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Cache/ 4.43kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Cache/Manager.php 4.43kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Data/ 6.29kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Data/Manager.php 6.29kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Frontend.php 4.08kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Installer.php 3.67kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Integration/ 15.52kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Integration/A3LazyLoad.php 467.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Integration/Elementor.php 627.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Integration/IntegrationAbstract.php 643.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Integration/Kinsta.php 1.97kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Integration/Manager.php 866.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Integration/RocketAsyncCSS.php 1.62kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Integration/RootRelativeURLS.php 1.36kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Integration/WebP.php 486.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Integration/WPEngine.php 3.09kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Integration/WPRocket.php 4.45kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Log.php 1.47kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Queue/ 12.17kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Queue/API/ 4.52kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Queue/API/Table.php 4.52kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Queue/ListTableAbstract.php 2.71kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Queue/Log/ 2.04kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Queue/Log/Table.php 2.04kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Queue/Web/ 2.89kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Queue/Web/Check/ 2.89kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Queue/Web/Check/Table.php 2.89kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Request.php 11.63kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Settings/ 21.02kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Settings/API.php 19.17kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Settings/Manager.php 1.85kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Template/ 1.15kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Template/Log.php 1.15kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Web/ 4.77kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Web/Check/ 4.77kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Web/Check/Background/ 4.77kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/lib/WP/CriticalCSS/Web/Check/Background/Process.php 4.77kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/README.txt 13.18kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/ 135.42kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/a5hleyrich/ 14.42kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/a5hleyrich/wp-background-processing/ 14.42kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/a5hleyrich/wp-background-processing/classes/ 13.39kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/a5hleyrich/wp-background-processing/classes/wp-async-request.php 2.82kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/a5hleyrich/wp-background-processing/classes/wp-background-process.php 10.57kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/a5hleyrich/wp-background-processing/composer.json 454.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/a5hleyrich/wp-background-processing/wp-background-processing.php 605.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/autoload.php 178.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/ 19.62kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/ 19.62kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/composer.json 522.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/LICENSE 7.47kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/src/ 11.63kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/src/Abstracts/ 6.80kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/src/Abstracts/BaseObject.php 603.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/src/Abstracts/Component.php 325.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/src/Abstracts/Manager.php 1.66kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/src/Abstracts/Plugin.php 4.23kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/src/ComponentInterface.php 97.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/src/Exception/ 380.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/src/Exception/ContainerInvalid.php 96.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/src/Exception/ContainerNotExists.php 98.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/src/Exception/InexistentProperty.php 98.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/src/Exception/ReadOnly.php 88.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/src/Traits/ 4.37kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/src/Traits/BaseObject.php 1.55kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composepress/core/src/Traits/Component.php 2.82kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composer/ 26.09kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composer/autoload_classmap.php 373.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composer/autoload_files.php 252.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composer/autoload_namespaces.php 149.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composer/autoload_psr4.php 389.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composer/autoload_real.php 2.36kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composer/autoload_static.php 1.93kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composer/ClassLoader.php 13.14kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composer/installed.json 6.49kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/composer/LICENSE 1.04kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/jakeasmith/ 6.00kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/jakeasmith/http_build_url/ 6.00kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/jakeasmith/http_build_url/composer.json 476.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/jakeasmith/http_build_url/LICENSE 1.05kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/jakeasmith/http_build_url/src/ 4.48kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/jakeasmith/http_build_url/src/http_build_url.php 4.48kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/jakeasmith/http_build_url/tests/ No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/level-2/ 9.55kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/level-2/dice/ 9.55kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/level-2/dice/composer.json 631.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/level-2/dice/Dice.php 4.73kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/level-2/dice/Loader/ 4.20kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/level-2/dice/Loader/Json.php 856.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/level-2/dice/Loader/Xml.php 3.37kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/ 59.57kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-cache-store/ 42.54kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-cache-store/bin/ No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-cache-store/composer.json 438.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-cache-store/LICENSE 34.32kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-cache-store/src/ 6.23kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-cache-store/src/WordPress/ 6.23kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-cache-store/src/WordPress/Cache/ 6.23kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-cache-store/src/WordPress/Cache/Store.php 6.23kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-cache-store/tests/ 1.56kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-cache-store/tests/bootstrap.php 451.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-cache-store/tests/StoreTest.php 1.12kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-plugin-framework/ 17.03kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-plugin-framework/composer.json 420.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-plugin-framework/LICENSE 7.47kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-plugin-framework/src/ 9.15kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-plugin-framework/src/BaseObjectAbstract.php 1.42kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-plugin-framework/src/ComponentAbstract.php 2.31kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-plugin-framework/src/ComponentInterface.php 115.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-plugin-framework/src/Exception/ 452.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-plugin-framework/src/Exception/ContainerInvalid.php 114.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-plugin-framework/src/Exception/ContainerNotExists.php 116.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-plugin-framework/src/Exception/InexistentProperty.php 116.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-plugin-framework/src/Exception/ReadOnly.php 106.00B No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-plugin-framework/src/ManagerAbstract.php 1.46kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/vendor/pcfreak30/wordpress-plugin-framework/src/PluginAbstract.php 3.41kB No known conflicts with other themes or plugins.
wp-content/plugins/wp-criticalcss/wp-criticalcss.php 2.18kB No known conflicts with other themes or plugins.

Which new shortcodes does WP Critical CSS add to WordPress?

Which new database tables are created by the WordPress plugin WP Critical CSS?

Which new options are added to the wp-options table by WP Critical CSS?

Option Name   Known Conflicts
wp_criticalcss The wp_criticalcss option doesn't have any known conflicts with other themes or plugins.

During use WP Critical CSS may or may not create more options depending on how the plugin is configured and depending on which other themes and plugins are active in your specific hosting environment.

Using WP Critical CSS from the command line with WP-CLI

The following commands are provided for convenience and should only be used if you understand how WP-CLI works. These commands refer to a single WordPress instance and may need to be modified if you are working with a Multisite installation.


How to install WP Critical CSS from the command line with WP-CLI

Navigate to the root of your WordPress installation and type the following command:

wp plugin install wp-criticalcss


How to activate WP Critical CSS from the command line with WP-CLI

To immediately activate WP Critical CSS after WP-CLI downloads the latest version you can use the following command:

wp plugin install wp-criticalcss --activate


How to reinstall WP Critical CSS from the command line with WP-CLI

To force a reinstallation of WP Critical CSS which overwrites the current plugin without asking for confirmation you can use the following command:

wp plugin install wp-criticalcss --force


How to update WP Critical CSS to the latest version from the command line with WP-CLI

wp plugin update wp-criticalcss


How to delete WP Critical CSS from the command line with WP-CLI

wp plugin delete wp-criticalcss

Where can you download earlier versions of WP Critical CSS?

Whenever possible you should use the latest version of plugins and themes, however if you have recently updated and discovered that you need to install an earlier version you may be able to download other versions of WP Critical CSS from the WordPress repository by visiting this link.

Please note that installing earlier versions of a theme or plugin is not generally a recommended course of action for most users and could re-introduce security, stability or other issues in WP Critical CSS

About our testing enviroment

Tests were conducted using Apache 2.4.29, PHP 7.2 on Ubuntu 18.04, MySQL 5.7.33 and WordPress 5.9

It is very possible that different versions of PHP such as PHP 8.0, PHP 7.4, or PHP 7.3 could behave differently with WP Critical CSS. Different versions of WordPress could implement the features of this plugin in slightly different ways as well.