rel="dns-prefetch" HTML attribute value
Baseline 2025 Newly available
Since September 2025, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
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.
Specifications
| Specification |
|---|
| HTML> # link-type-dns-prefetch> |
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
dns-prefetch |
46 | 79 |
1273–127Only HTTP pages were supported. |
33 | 5 | 46 |
1274–127Only HTTP pages were supported. |
33 | 26 | 5.0 | 46 | 26 |
See also
-
Speculative loading for a comparison of
<link rel="dns-prefetch">and other similar performance improvement features.
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https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes/rel/dns-prefetch
