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This plugin adds support for the <a href="https://developer.mozilla.org/en-US/docs/Web/API/Speculation_Rules_API" rel="nofollow ugc">Speculation Rules API</a>, which allows defining rules by which certain URLs are dynamically prefetched or prerendered. This core Speculative Loading functionality was <a href="https://make.wordpress.org/core/2025/03/06/speculative-loading-in-6-8/" rel="nofollow ugc">merged into WordPress 6.8</a>, but it only prefetches with conservative eagerness by default. In contrast, this plugin defaults to prerendering with moderate eagerness (i.e. when interacting with a link), and it provides a user interface to customize the mode and eagerness via the “Speculative Loading” section on the Settings > Reading admin screen.
By default, speculative loading is only enabled for logged-out users, since unauthenticated pages are typically only eligible for caching and so more efficient to prefetch/prerender. This means that sites with frequent logged-in users on the frontend—such as e-commerce, forums, or membership sites—will not benefit from the feature. If your server can handle the additional load (for example, with persistent object caching), you can opt in to enable speculative loading for all logged-in users or for administrators only. This setting exclusively affects frontend pages; admin screens are always excluded.
A filter can be used to exclude certain URL paths from being eligible for prefetching and prerendering (see FAQ section). Alternatively, you can add the <code>no-prerender</code> CSS class to any link (<code><a></code> tag) that should not be prerendered. See FAQ for more information.
<h4>Browser support</h4>
The Speculation Rules API is a new web API, and the functionality used by the plugin is supported in Chromium-based browsers such as Chrome, Edge, or Opera using version 121 or above. Other browsers such as Safari and Firefox will ignore the functionality with no ill effects; they will simply not benefit from the speculative loading. Note that certain browser extensions may disable preloading by default.
<ul>
<li><a href="https://caniuse.com/mdn-html_elements_script_type_speculationrules" rel="nofollow ugc">Browser support for the Speculation Rules API in general</a></li>
<li><a href="https://developer.chrome.com/docs/web-platform/prerender-pages" rel="nofollow ugc">Information on document rules syntax support used by the plugin</a></li>
</ul>
This plugin was formerly known as Speculation Rules.

Speculative Loading

Nice


Amazing results on install. Will continue to check this one out. 


Interesting and Impressive

Does what it needs to do.

Enables browsers to speculatively prerender or prefetch pages to achieve near-instant loads based on user interaction.

Aminul Islam

PageFlash is a powerful headless browser WordPress plugin designed to provide you with a fast and efficient web browsing experience within your WordPress site. Say goodbye to page reloads and enjoy seamless navigation through web content with this plugin. Harness the speed and agility of PageFlash for your WordPress website.
<h3>Key Features:</h3>
<ul>
<li>Lightning-Fast Browsing: PageFlash lives up to its name, offering rapid page loading and navigation without the need for tedious page refreshes.</li>
<li>Smooth Script Execution: Execute scripts and interact with web pages in a fluid and continuous manner. With PageFlash, you’ll experience uninterrupted script execution, ensuring your web applications run seamlessly.</li>
<li>Prefetches: PageFlash incorporates advanced prefetching technology to speed up your web browsing. It anticipates and loads pages in the background, reducing loading times and providing a smoother browsing experience.</li>
<li>No More Reloads: Say goodbye to unnecessary page reloads with PageFlash, and enjoy uninterrupted web exploration. PageFlash ensures a frustration-free web experience by eliminating the need for page reloads, providing you with a streamlined and seamless browsing experience.</li>
</ul>
For more information and documentation, visit our <a href="https://theaminul.com/pageflash/docs" rel="nofollow ugc">plugin documentation</a>.
<h3>How it works:</h3>
<ul>
<li>Detects links within the viewport (using <a href="https://developer.mozilla.org/en-US/docs/Web/API/Intersection_Observer_API" rel="nofollow ugc">Intersection Observer</a>)</li>
<li>Waits until the browser is idle (using <a href="https://developer.mozilla.org/en-US/docs/Web/API/Window/requestIdleCallback" rel="nofollow ugc">requestIdleCallback</a>)</li>
<li>Checks if the user isn’t on a slow connection (using <code>navigator.connection.effectiveType</code>) or has data-saver enabled (using <code>navigator.connection.saveData</code>)</li>
<li>Prefetches URLs to the links (using <a href="https://www.w3.org/TR/resource-hints/#prefetch" rel="nofollow ugc"><code><link rel=prefetch></code></a> or XHR). Provides some control over the request priority (can switch to <code>fetch()</code> if supported).</li>
</ul>
If you are a developer, we encourage you to follow along or <a href="https://github.com/theaminuldev/pageflash" rel="nofollow ugc">contribute</a> to the development of this plugin <a href="https://github.com/theaminuldev/pageflash" rel="nofollow ugc">on GitHub</a>.
<h3>Browser support:</h3>
This plugin also works perfectly on popular browsers. 
– 🖥 Microsoft EDGE 
– 🖥 Firefox 4+ 
– 🖥 Chrome 
– 🖥 Opera 
– 📱 Android 4+

PageFlash – Fast and Efficient Headless Browser WordPress Plugin

By using PageFlash, an active plugin, you'll experience a 50% increase in conversions and enjoy 4x faster page loading.

Speculative Loading vs PageFlash – Fast and Efficient Headless Browser WordPress Plugin