wpsnoop: fix Autoptimize plugin conflicts, errors & issues

When the plugin Autoptimize 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 Autoptimize, plus learn which plugins and/or themes could be in conflict with Autoptimize.


Troubleshooting theme and plugin conflicts is easier when you know what Autoptimize 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 Autoptimize

Get professional support for Autoptimize here

When you need professional help with WordPress: get help here


What does Autoptimize version 2.9.5.1 add to WordPress? Answers Here.

This is an automatically generated report - it is possible for Autoptimize to perform differently in your installation, previous versions before 2.9.5.1 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 2.9.5.1 of Autoptimize 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 Autoptimize 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 Autoptimize add to WordPress?

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

Type & Path Size Conflicts
wp-content/cache/ 1.23kB The wp-content/cache/ directory has potential conflicts with at least 60 other plugins or themes.
wp-content/uploads/ The wp-content/uploads/ directory has potential conflicts with at least 1495 other plugins or themes.
wp-content/uploads/ao_ccss/ The wp-content/uploads/ao_ccss/ directory has potential conflict with at least 1 other plugin or theme.
wp-content/autoptimize_404_handler.php 2.20kB No known conflicts with other themes or plugins.
wp-content/cache/autoptimize/ 1.23kB No known conflicts with other themes or plugins.
wp-content/cache/autoptimize/.htaccess 693.00B No known conflicts with other themes or plugins.
wp-content/cache/autoptimize/css/ 189.00B No known conflicts with other themes or plugins.
wp-content/cache/autoptimize/css/index.html 189.00B No known conflicts with other themes or plugins.
wp-content/cache/autoptimize/index.html 189.00B No known conflicts with other themes or plugins.
wp-content/cache/autoptimize/js/ 189.00B No known conflicts with other themes or plugins.
wp-content/cache/autoptimize/js/index.html 189.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/ 824.47kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/autoptimize_helper.php_example 5.33kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/autoptimize.php 3.18kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/ 753.36kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeBase.php 22.77kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeCache.php 28.58kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeCacheChecker.php 5.22kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeCLI.php 743.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeConfig.php 48.48kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeCriticalCSSBase.php 9.00kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeCriticalCSSCore.php 27.82kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeCriticalCSSCron.php 44.01kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeCriticalCSSEnqueue.php 15.77kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeCriticalCSSSettings.php 21.82kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeCriticalCSSSettingsAjax.php 17.88kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeCSSmin.php 1.10kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeExitSurvey.php 6.87kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeExtra.php 29.85kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeHTML.php 3.85kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeImages.php 65.45kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeMain.php 33.13kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeMetabox.php 12.18kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeOptionWrapper.php 6.53kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizePartners.php 4.77kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeScripts.php 28.99kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeSpeedupper.php 4.37kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeStyles.php 52.10kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeToolbar.php 6.59kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeUtils.php 19.18kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/autoptimizeVersionUpdatesHandler.php 10.57kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/ 96.94kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/admin_settings_adv.php 10.59kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/admin_settings_debug.php 2.42kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/admin_settings_explain.php 2.82kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/admin_settings_impexp.js.php 2.06kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/admin_settings_key.php 3.45kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/admin_settings_queue.js.php 11.38kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/admin_settings_queue.php 7.14kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/admin_settings_rules.js.php 17.40kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/admin_settings_rules.php 14.33kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/css/ 5.05kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/css/admin_styles.css 3.88kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/css/ao-tablesorter/ 1.18kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/css/ao-tablesorter/asc.gif 54.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/css/ao-tablesorter/bg.gif 64.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/css/ao-tablesorter/desc.gif 54.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/css/ao-tablesorter/style.css 1.01kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/js/ 20.29kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/js/admin_settings.js 393.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/js/jquery.tablesorter.min.js 16.23kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/critcss-inc/js/md5.min.js 3.68kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/ 106.90kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/do_not_donate_smallest.png 9.36kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/index.html 190.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/js/ 21.28kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/js/index.html 190.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/js/jquery.cookie.js 3.57kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/js/jquery.cookie.min.js 808.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/js/lazysizes.min.js 9.58kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/js/unslider-dots.css 778.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/js/unslider-min.js 5.83kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/js/unslider.css 574.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/php/ 76.08kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/php/ao-minify-html.php 8.63kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/php/index.html 190.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/php/jsmin.php 15.92kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/php/persist-admin-notices-dismissal/ 9.28kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/php/persist-admin-notices-dismissal/dismiss-notice.js 868.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/php/persist-admin-notices-dismissal/persist-admin-notices-dismissal.php 3.95kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/php/persist-admin-notices-dismissal/README.md 4.49kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/php/yui-php-cssmin-bundled/ 42.06kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/php/yui-php-cssmin-bundled/Colors.php 5.37kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/php/yui-php-cssmin-bundled/index.html 190.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/php/yui-php-cssmin-bundled/Minifier.php 32.51kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/external/php/yui-php-cssmin-bundled/Utils.php 3.99kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/index.html 189.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/static/ 21.72kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/static/exit-survey/ 9.02kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/static/exit-survey/exit-survey.css 3.74kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/static/exit-survey/exit-survey.js 5.28kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/static/loading.gif 4.53kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/static/toolbar.css 4.68kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/classes/static/toolbar.js 3.49kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/config/ 5.25kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/config/autoptimize_404_handler.php 2.16kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/config/default.php 2.92kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/config/index.html 189.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/index.html 189.00B No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/LICENSE 17.60kB No known conflicts with other themes or plugins.
wp-content/plugins/autoptimize/readme.txt 39.56kB No known conflicts with other themes or plugins.

Which new shortcodes does Autoptimize add to WordPress?

Which new database tables are created by the WordPress plugin Autoptimize?

Which new options are added to the wp-options table by Autoptimize?

Option Name   Known Conflicts
autoptimize_ccss_version Potential conflict with 1 plugin or theme
autoptimize_version The autoptimize_version option doesn't have any known conflicts with other themes or plugins.

During use Autoptimize 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.

What new PHP functions does Autoptimize declare when it is active?

Using Autoptimize 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 Autoptimize from the command line with WP-CLI

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

wp plugin install autoptimize


How to activate Autoptimize from the command line with WP-CLI

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

wp plugin install autoptimize --activate


How to reinstall Autoptimize from the command line with WP-CLI

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

wp plugin install autoptimize --force


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

wp plugin update autoptimize


How to delete Autoptimize from the command line with WP-CLI

wp plugin delete autoptimize

Where can you download earlier versions of Autoptimize?

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 Autoptimize 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 Autoptimize

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 Autoptimize. Different versions of WordPress could implement the features of this plugin in slightly different ways as well.