What percent of visitors should click on the next page before you enable prefetching?
- by Kevin Burke
Mozilla Firefox and Google Chrome support prefetching via an HTML tag:
<!-- in chrome -->
<link rel="prerender" href="http://example.org/index.html">
I suppose it is always worthwhile to include this tag if 100% of users on a page click on the "Next Page" button or similar, and never worthwhile to include it if only 2% or 3% of users visit the following page. At what percent of clicks should you turn on prefetching of the next page? 65%? Also, does the calculus change if the current page is HTTP and the next page is HTTPS?