Fast WordPress page caching, smart cache clearing, WebP conversion, WooCommerce-aware rules and built-in diagnostics.

Thomas Audunhus

erlendeide

Andrew Killen

Robert Sæther

Servebolt

Servebolt Optimizer

This plugin implements Servebolt's WordPress best practices, and connects your site to the Servebolt Admin Panel.

Holographic

<p>Holographic Extreme Cache gives WordPress sites the core performance features they need, without overwhelming setup or unnecessary complexity.</p>
<p>It adds a fast, professional caching layer with practical tools for improving real-world WordPress performance.</p>
<p>The plugin includes advanced page caching, intelligent cache clearing, WebP image conversion for new uploads where supported, WooCommerce-aware exclusions, preload support, HTML minification, WordPress emoji disabling, browser cache helper rules, homepage speed testing and cache diagnostics.</p>
<p>Built for real WordPress sites, it helps pages load faster while keeping setup clear and manageable. The free and Pro plugins both include a built-in help section, so site owners can understand the available settings and improve performance without guesswork.</p>
<h3>Features</h3>
<ul>
<li>Static HTML page caching.</li>
<li>Smart purge for posts, pages, archives, taxonomy archives, authors and homepage.</li>
<li>Automatic cache clearing when content changes.</li>
<li>Preload for homepage, recent posts and recent pages.</li>
<li>WooCommerce cart, checkout and account exclusions.</li>
<li>WebP conversion for newly uploaded JPEG and PNG images.</li>
<li>WebP fallback handling so original images remain available.</li>
<li>Homepage speed test for cache-off and cache-on comparison with expandable diagnostics.</li>
<li>Built-in cache health check.</li>
<li>Cache size and cached page count.</li>
<li>PHP fallback cache delivery.</li>
<li>advanced-cache.php drop-in support.</li>
<li>Apache rewrite helper rules.</li>
<li>Default exclusions for dynamic and personalised requests.</li>
<li>Logged-in user bypass by default, with an advanced option for specialist use cases.</li>
<li>POST, AJAX, REST, preview and unsafe query string bypass.</li>
<li>Cached HTML and inline CSS minification.</li>
<li>Browser cache helper.</li>
<li>Gzip and Brotli detection.</li>
<li>Disable WordPress emoji files option.</li>
<li>Combined cache and preload controls for simpler setup.</li>
<li>Manual clear cache button.</li>
<li>Admin bar cache clearing.</li>
<li>Cache lifetime control.</li>
<li>Last purge and last preload time.</li>
<li>Other caching plugin conflict detection.</li>
<li>Debug response headers.</li>
<li>Images tab showing server WebP support and image conversion settings.</li>
<li>Setup checklist to help site owners finish the main cache setup steps.</li>
<li>Setup tab with one-click WP_CACHE handling where wp-config.php is writable.</li>
<li>Safe and Balanced modes.</li>
<li>Optional uninstall cleanup.</li>
</ul>
<h3>Privacy</h3>
<p>Holographic Extreme Cache does not collect analytics, does not track visitors and does not send site data to a third-party service.</p>
<p>The plugin stores cache files, configuration helper files, generated WebP image files and optional log files inside the WordPress uploads directory. Logging is off by default.</p>
<h3>Uninstall</h3>
<p>The plugin can remove its settings, cache files, configuration files, log files and scheduled events on uninstall if the uninstall cleanup option is enabled before uninstalling.</p>
<p>If uninstall cleanup is not enabled, settings and generated files are left in place so the site owner can remove or inspect them manually.</p>
<p>Generated WebP image files are not automatically removed unless the plugin uninstall cleanup process specifically handles them. This helps avoid removing media files that may still be referenced by the site.</p>


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