Danila Vershinin

Cacheability makes your WordPress site a better HTTP citizen, improving SEO and cache efficiency.
<h4>Free Features</h4>
Soft 404 Fix
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.
Cacheability fixes this by returning proper 404 status codes when:
<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>
Smart Cache-Control Headers
Automatically adds <code>s-maxage</code> headers so Varnish, NGINX, and CDNs can cache your pages efficiently without affecting browser caching behavior.
<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>
Upgrade to <a href="https://www.getpagespeed.com/web-apps/cacheability-pro" rel="nofollow ugc">Cacheability Pro</a> for advanced features:
<ul>
<li>Cache Warming — Automatically warm pages after purging so visitors never hit cold cache</li>
<li>Conditional GET (304) — Return 304 Not Modified for unchanged content, saving bandwidth</li>
<li>ESI Support — Cache pages with dynamic nonces (comments, login forms)</li>
<li>Rate-Limit Safe — Smart request queuing to avoid 429 errors</li>
<li>Sitemap Warming — Warm all pages from sitemap after full purge</li>
<li>WP-CLI Commands — <code>wp cacheability warm</code> and more</li>
<li>Priority Support — Get help when you need it</li>
</ul>
<a href="https://www.getpagespeed.com/web-apps/cacheability-pro" rel="nofollow ugc">Get Cacheability Pro →</a>

Cacheability

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

jumaron

WPS-Cache enhances your WordPress site’s speed by implementing multiple layers of caching: 
– HTML Cache: Delivers pre-rendered static pages. 
– Redis Cache: Accelerates database query performance. 
– Varnish Cache: Handles HTTP-level caching for improved scalability.
<h3>External Services</h3>
This plugin connects to external caching services to optimize performance:
<ul>
<li>Varnish Cache: 
The plugin sends HTTP requests (such as purge requests and connection checks) to a specified Varnish caching server. No personal or sensitive data is transmitted. For additional details, please review the <a href="https://varnish-cache.org/" rel="nofollow ugc">Varnish Cache documentation</a>, its <a href="https://varnish-cache.org/TOS" rel="nofollow ugc">Terms of Service</a>, and <a href="https://varnish-cache.org/privacy" rel="nofollow ugc">Privacy Policy</a>.</li>
</ul>

WPS-Cache

Boost your WordPress speed with multi-layer caching: HTML, Redis, and Varnish for fast performance.

Cacheability vs WPS-Cache