The Speculative Loading plugin for WordPress is a plugin you should probably try out on your site, especially if you use WP Super Cache or Jetpack Boost to cache things. It uses the new speculation API that Chrome/Edge supports to load pages in the background if you even hover over a link.
It will dynamically prefetch or prerender pages before they’re requested by the visitor on your site, which means that the page will show instantly when the visitor actually clicks the link.
It doesn’t work in Firefox yet, but it won’t hurt either, as the browser will just ignore the extra bits and pieces added to the page.
The default “moderate” eagerness works fine for me. The “eager” setting appeared to load links if the cursor got anywhere near them, which was a little too aggressive.
You won’t notice your browser loading the page in the Network tab of the webdev tools, but if you tail your access_log, you’ll see the requests go through when you hover over the links.
Browse around this site, or take a look at my photoblog for a feel of what it does.
There’s more info in the make blog post about it, and this insightful comment about the wastefulness of loading pages that might not be used, especially for visitors on limited data plans, or low powered devices. That’s definitely something to think about before using this plugin. I may yet remove it later, and I’ll update this post if I do.
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