Arya Dhiratara

ThinkWeb

<p>Selectively Optimize your CSS Delivery: Load CSS Asynchronously, Delay CSS until User Interaction, Preload Critical CSS, and Remove Unused CSS Files. Part of <code>ThinkWeb's Performance Pack</code>.</p>
<p>Optimize your site further. Minimize or get rid of Remove Unused CSS and Eliminate Render Blocking Resources warnings on Google Page Speed Insights.</p>
<h3>Features</h3>
<ul>
<li><strong>Load CSS Asynchronously</strong> – selectively load CSS file(s) asynchronously.</li>
<li><strong>Delay CSS until User Interaction</strong> – selectively delay CSS load until user interaction.</li>
<li><strong>Preload Critical CSS</strong> – selectively preload critical CSS file(s).</li>
<li><strong>Remove Unused CSS Files</strong> – selectively remove unused CSS file(s).</li>
</ul>
<h3>Optimize More!</h3>
<p>Need to optimize more? Try our <a href="https://thinkweb.dev/speed-optimization/" rel="nofollow ugc">WordPress Speed Optimization’s Service</a></p>
<h3>More plugin from ThinkWeb</h3>
<ul>
<li><strong><a href="https://wordpress.org/plugins/optimize-more-images/" rel="ugc">Optimize More! Images</a></strong> – A simple yet powerfull image, iframe, and video optimization plugin (Lazy load images / iframes / videos, Preload featured images automatically). Also support lazy loading CSS background images.</li>
</ul>
<h3>Disclaimer</h3>
<p>This plugin will always be in beta. Though the plugin works perfectly well on most WordPress sites, it’s not perfect. We will always try to enhance and adds more features.</p>
<p>This plugin only adds 1 extra row in your database. And it will self delete upon uninstalation.</p>


Optimize More! – CSS

Optimize CSS Delivery: Load CSS Asynchronously, Delay CSS until User Interaction, Preload Critical CSS, and Remove Unused CSS Files.

Danila Vershinin

<p>Cacheability makes your WordPress site a better HTTP citizen, improving SEO and cache efficiency.</p>
<h4>Free Features</h4>
<p><strong>Soft 404 Fix</strong></p>
<p>WordPress returns HTTP 200 for empty search results, invalid tag pages, and empty category archives. Google marks these as “soft 404” errors in Search Console, hurting your SEO.</p>
<p>Cacheability fixes this by returning proper 404 status codes when:</p>
<ul>
<li>Search results are empty (<code>/?s=nonexistent</code>)</li>
<li>Tag archives are empty (<code>/tag/nonexistent/</code>)</li>
<li>Category archives are empty</li>
<li>Author archives are empty</li>
</ul>
<p><strong>Smart Cache-Control Headers</strong></p>
<p>Automatically adds <code>s-maxage</code> headers so Varnish, NGINX, and CDNs can cache your pages efficiently without affecting browser caching behavior.</p>
<ul>
<li>Search/404 pages: 1 hour cache</li>
<li>All other pages: 1 year cache (your purge plugin handles invalidation)</li>
</ul>
<h4>Cacheability Pro</h4>
<p>Upgrade to <a href="https://www.getpagespeed.com/web-apps/cacheability-pro" rel="nofollow ugc">Cacheability Pro</a> for advanced features:</p>
<ul>
<li><strong>Cache Warming</strong> — Automatically warm pages after purging so visitors never hit cold cache</li>
<li><strong>Conditional GET (304)</strong> — Return 304 Not Modified for unchanged content, saving bandwidth</li>
<li><strong>ESI Support</strong> — Cache pages with dynamic nonces (comments, login forms)</li>
<li><strong>Rate-Limit Safe</strong> — Smart request queuing to avoid 429 errors</li>
<li><strong>Sitemap Warming</strong> — Warm all pages from sitemap after full purge</li>
<li><strong>WP-CLI Commands</strong> — <code>wp cacheability warm</code> and more</li>
<li><strong>Priority Support</strong> — Get help when you need it</li>
</ul>
<p><a href="https://www.getpagespeed.com/web-apps/cacheability-pro" rel="nofollow ugc">Get Cacheability Pro <span aria-hidden="true" class="wp-exclude-emoji">→</span></a></p>


Cacheability

HTTP optimization for WordPress. Fixes soft 404 errors and adds smart cache headers.

Optimize More! – CSS vs Cacheability