Hire Autoptimize Developers

Autoptimize is a free WordPress performance plugin developed by Frank Goossens. It optimises page assets by minifying (removing whitespace and comments from) CSS and JavaScript files, combining multiple files into fewer requests, inlining critical CSS in the HTML head, and deferring JavaScript loading. These optimisations reduce page weight and the number of HTTP requests, which improves page load times – particularly on slower connections.

Autoptimize is one of the oldest and most widely installed performance plugins for WordPress. It complements caching plugins – while caching plugins serve pre-built HTML pages, Autoptimize reduces the size and number of assets on those pages. The two are commonly used together.

The plugin’s challenge is that aggressive CSS and JavaScript concatenation and minification can break site functionality. Scripts that depend on loading order, inline scripts that reference concatenated file handles, or CSS that uses absolute paths for background images can all fail when Autoptimize processes them incorrectly. Knowing how to configure Autoptimize’s exclusion lists to prevent processing of problematic scripts – without excluding so much that performance benefit is lost – requires experience with the plugin. Our guide on setting up Autoptimize correctly covers the configuration approach in detail, and our article on why mobile menus break after Autoptimize explains a common breakage pattern. How To Set Up Autoptimize The Right Way.

Autoptimize work on WordPress projects typically involves:

• Initial configuration – enabling the right combination of CSS and JavaScript optimisations and testing that the site functions correctly after each setting change.
• Exclusion list management – identifying which scripts and styles should not be processed by Autoptimize because they break when combined or minified.
• Fixing Autoptimize-caused breakage – diagnosing and resolving site functionality that broke after Autoptimize was enabled or after its settings were changed.
• Autoptimize and page builder compatibility – configuring Autoptimize to work correctly alongside Elementor, Divi, WPBakery, or other page builders whose JavaScript is sensitive to concatenation order.
• Critical CSS extraction – configuring Autoptimize’s critical CSS feature to inline above-the-fold CSS for improved Largest Contentful Paint (LCP) scores.
• Evaluating whether Autoptimize is still appropriate – for sites that have moved to more complete caching plugins or CDNs that handle asset optimisation, Autoptimize may create conflicts or add unnecessary overhead.

Autoptimize configuration is a methodical process of enabling settings, testing functionality, identifying breakage, and adding exclusions. Look for developers who describe this methodical approach rather than just enabling all settings and hoping for the best.

For diagnosis work (fixing Autoptimize-caused breakage), ask how they identify which Autoptimize setting is causing the problem. The answer should involve disabling Autoptimize entirely to confirm it is the cause, then re-enabling settings one by one to identify the specific setting that breaks the functionality. Browser console errors during this process point to the specific script or style causing the problem.

Ask whether they are familiar with the Autoptimize alternatives – WP Rocket, Perfmatters, FlyingPress – and their honest opinion on whether Autoptimize is still the right tool. A developer who can compare Autoptimize with alternatives and recommend the right tool for the specific site is more valuable than one who only knows one plugin.

Common Autoptimize problems: Autoptimize Not Working Real Fixes For Broken Css Js And Layout Problems.

• JavaScript not working after enabling Autoptimize JS optimisation – a script that was being concatenated by Autoptimize depends on another script that is now loaded later. Add the breaking script to Autoptimize’s JavaScript exclusion list. See our article on fixing Autoptimize CSS and JS problems.
• CSS layout broken after enabling Autoptimize CSS optimisation – a CSS file uses relative paths for background images or font files that become invalid when the file is moved to Autoptimize’s cache directory. Add the affected stylesheet to the CSS exclusion list.
• Mobile menu not opening after Autoptimize – the menu JavaScript is being concatenated after a dependency it requires. Exclude the menu script from Autoptimize’s JavaScript processing.
• Page builder elements not rendering correctly – the page builder’s JavaScript initialisation is being affected by concatenation order. Exclude page builder scripts from Autoptimize processing.
• Autoptimize cache not clearing after content updates – Autoptimize’s automatic cache clearing is not triggering. Manually clear the Autoptimize cache from the Autoptimize settings or configure the auto-clear settings.

Autoptimize exclusion lists need to be reviewed when plugins or themes update. A plugin update that changes how its JavaScript is structured may break compatibility with Autoptimize’s current exclusion configuration – the script may no longer need to be excluded, or a previously compatible script may now need to be excluded.

Autoptimize’s cache should be cleared after significant site updates – theme updates, plugin updates, or CSS changes – to ensure the optimised files reflect the current state of the site’s assets.

When posting an Autoptimize project on Codeable, describe whether you need initial configuration, troubleshooting of a breakage caused by Autoptimize, or a broader performance optimisation project. If Autoptimize is causing a specific problem, describe what broke and when it broke – which setting was enabled when the problem appeared.