Mohsin Webs

SpeedOx is a powerful and lightweight performance optimization plugin for WordPress. It helps speed up your site with intelligent caching, automatic cache cleaning, CSS/JS minification, lazy loading, and advanced database optimization—all with a user-friendly dashboard that works out-of-the-box.
SpeedOx is designed to be compatible with most themes and plugins, including WooCommerce, without requiring complex configuration. Whether you’re a beginner or pro, SpeedOx makes performance tuning easy and effective.
Key Benefits:
<ul>
<li>✅ Boost PageSpeed scores and Core Web Vitals</li>
<li>⚡ Faster page load times with smart cache</li>
<li>🔒 Fully secure and GDPR-conscious</li>
<li>🧠 No coding knowledge required</li>
</ul>
<h3>Features</h3>
General Optimization Features:
<ul>
<li>Page Cache (Disk-based)</li>
<li>Cache Preloading</li>
<li>Minify HTML, CSS & JS</li>
<li>Combine CSS/JS</li>
<li>Defer or Delay JS</li>
<li>Lazy Load images & iframes</li>
<li>Database Cleaner & Optimizer</li>
<li>Remove Emoji & Embed scripts</li>
<li>GZIP/Brotli Compression (if server supports)</li>
<li>Browser Caching</li>
<li>DNS Prefetch & Preconnect</li>
<li>Heartbeat Control</li>
<li>Support for custom exclude/include rules</li>
<li>Automatic full cache purge every 6 hours to keep content fresh</li>
</ul>
Advanced Features:
<ul>
<li>Mobile and desktop cache split</li>
<li>Smart automatic purge of cache</li>
<li>Critical CSS generation (manual)</li>
<li>Multisite compatible</li>
<li>Custom CDN integration</li>
<li>Full compatibility with popular plugins like WooCommerce, Yoast SEO, and Contact Form 7</li>
<li>Simple import/export of settings</li>
<li>One-click cache cleaner and reset</li>
<li>Admin Activity Logs</li>
<li>Automatic full cache purge every 6 hours to keep content fresh</li>
</ul>
<h3>Privacy</h3>
SpeedOx stores optimization settings and logs locally on your site. It does not collect or transmit personal visitor data. All cached content is temporary and can be purged any time.
We comply with GDPR guidelines and no external data is stored or shared.
<h3>Credits</h3>
SpeedOx is proudly developed and maintained by <a href="https://profiles.wordpress.org/mohsinwebs/" rel="nofollow ugc">mohsinwebs</a>
<h3>License</h3>
This plugin is licensed under GPLv2 or later. You’re free to use, modify, and distribute.

SpeedOx

SpeedOx is a powerful speed optimization plugin that intelligently caches, cleans, and boosts WordPress performance.

WordPress.org

This plugin optimizes the loading of images (and videos) with prioritization to improve <a href="https://web.dev/articles/lcp" rel="nofollow ugc">Largest Contentful Paint</a> (LCP), lazy loading, and more accurate image size selection.
The current optimizations include:
<ol>
<li>Add breakpoint-specific <code>fetchpriority=high</code> preload links (both as <code>LINK[rel=preload]</code> elements and <code>Link</code> response headers) for image URLs of LCP elements:
<ol>
<li>An <code>IMG</code> element, including the <code>srcset</code>/<code>sizes</code> attributes supplied as <code>imagesrcset</code>/<code>imagesizes</code> on the <code>LINK</code>.</li>
<li>The first <code>SOURCE</code> element with a <code>type</code> attribute in a <code>PICTURE</code> element. (Art-directed <code>PICTURE</code> elements using media queries are not supported.)</li>
<li>An element with a CSS <code>background-image</code> inline <code>style</code> attribute.</li>
<li>An element with a CSS <code>background-image</code> applied with a stylesheet (when the image is from an allowed origin).</li>
<li>A <code>VIDEO</code> element’s <code>poster</code> image.</li>
</ol>
</li>
<li>Ensure <code>fetchpriority=high</code> is only added to an <code>IMG</code> when it is the LCP element across all responsive breakpoints.</li>
<li>Add <code>fetchpriority=low</code> to <code>IMG</code> tags which appear in the initial viewport but are not visible, such as when they are subsequent carousel slides.</li>
<li>Lazy loading:
<ol>
<li>Apply lazy loading to <code>IMG</code> tags based on whether they appear in any breakpoint’s initial viewport.</li>
<li>Implement lazy loading of CSS background images added via inline <code>style</code> attributes.</li>
<li>Lazy-load <code>VIDEO</code> tags by setting the appropriate attributes based on whether they appear in the initial viewport. If a <code>VIDEO</code> is the LCP element, it gets <code>preload=auto</code>; if it is in an initial viewport, the <code>preload=metadata</code> default is left; if it is not in an initial viewport, it gets <code>preload=none</code>. Lazy-loaded videos also get initial <code>preload</code>, <code>autoplay</code>, and <code>poster</code> attributes restored when the <code>VIDEO</code> is going to enter the viewport.</li>
</ol>
</li>
<li>Responsive image sizes:
<ol>
<li>Ensure <a href="https://make.wordpress.org/core/2024/10/18/auto-sizes-for-lazy-loaded-images-in-wordpress-6-7/" rel="nofollow ugc"><code>sizes=auto</code></a> is set on <code>IMG</code> tags after setting correct lazy-loading (above).</li>
<li>~~Compute the <code>sizes</code> attribute using the widths of an image collected from URL Metrics for each breakpoint (when not lazy-loaded since then handled by <code>sizes=auto</code>).~~ (This has been removed due to an <a href="https://github.com/WordPress/performance/issues/2098" rel="nofollow ugc">issue</a>; use <a href="https://wordpress.org/plugins/auto-sizes/" rel="ugc">Enhanced Responsive Images instead</a>.)</li>
</ol>
</li>
<li>Reduce the size of the <code>poster</code> image of a <code>VIDEO</code> from full size to the size appropriate for the maximum width of the video (on desktop).</li>
</ol>
This plugin requires the <a href="https://wordpress.org/plugins/optimization-detective/" rel="ugc">Optimization Detective</a> plugin as a dependency. Please refer to that plugin for additional background on how this plugin works as well as additional developer options.
👉 Note: This plugin optimizes pages for actual visitors, and it depends on visitors to optimize pages. As such, you won’t see optimizations applied immediately after activating the plugin. Please wait for URL Metrics to be gathered for both mobile and desktop visits. And since administrator users are not normal visitors typically, optimizations are not applied for admins by default.
Your site must have the REST API accessible to unauthenticated frontend visitors since this is how metrics are collected about how a page should be optimized. There are currently no settings and no user interface for this plugin since it is designed to work without any configuration.

Image Prioritizer

Prioritizes the loading of images and videos based on how they appear to actual visitors: adds fetchpriority, preloads, lazy-loads, and sets sizes.

SpeedOx vs Image Prioritizer