The dns-prefetch keyword for the rel attribute of the <link> element is a hint to browsers that the user is likely to need resources from the target resource's origin, and therefore the browser can likely improve the user experience by preemptively performing DNS resolution for that origin.

See Using dns-prefetch for more details.


Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
dns-prefetch 46 ≤79 3 No 33 No 46 Yes 4 No No Yes

See also

  • Speculative loading for a comparison of <link rel="dns-prefetch"> and other similar performance improvement features.

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