Endorsing DNS Prefetch

Friday, 9 Jan 2009

Brandon Siegel:

DNS Prefetching speeds up your browsing experience by resolving and caching DNS lookups before you actually click on a link. Without this technique, the DNS lookup is performed only when you click on the link, adding a wait of 250 ms (on average) before the page even starts to show up.

While DNS Prefetcher does perform a DNS lookup for each different site that exists in a link on your current page, it does not connect to those sites or download any data from them. Unlike page prefetching, the only servers contacted are your computer’s DNS servers.

If you have ever envied Chrome’s low latency from click to page load, install this extension and envy no more.