Link prefetching

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Link prefetching is a standards compliant mechanism used by some web browsers, which utilizes browser idle time to download or prefetch documents that the user might visit in the near future. A web page provides a set of prefetching hints to the browser, and after the browser is finished loading the page, and after an idle time has passed, it begins silently prefetching specified documents, storing them in its cache. When the user visits one of the prefetched documents, it can be served up quickly out of the browser's cache.

As prefetching is a standard, examples of prefetching can be divided into standard compliant and non-compliant:

1 Compliant prefetching
2 Non compliant prefetching
3 Browsers supporting prefetching
4 Sites using prefetching
5 Notes
6 External links

[edit] Compliant prefetching

The standard is set out in a web standard^[1].^{[citation needed]}

[edit] Non compliant prefetching

Forcing links to be prefetched when they are not specified as prefetchable^{[citation needed]}.

Fasterfox has an option to enable this.

[edit] Browsers supporting prefetching

Mozilla Application Suite (Firefox etc.) and its derivatives - the first browser to support prefetching^{[citation needed]}.
browsing using a Google Web Accelerator (maybe technically called precaching)

[edit] Sites using prefetching

Google is the first well-known website that takes advantage of this feature so as to improve the user experience. If the first hit is considered very probable to be the desired hit, it is assigned as a prefetchable link.
Web Album Generator is a free program that creates photo albums which utilize link prefetching.