The rel="preconnect" attribute for the <link> HTML element is a hint to the browser that the page or user is likely to request resources from another origin, so the browser should preemptively start a connection to the href value's origin.

Learning resources on MDN

No MDN documentation found. You can search for the feature on MDN. If you believe that MDN has no documentation about this feature, you can open an issue on MDN's GitHub repository.

Browser support

• Chrome 46 Released on 2015-10-13
• Chrome Android 46 Released on 2015-10-14
• Edge 79 Released on 2020-01-15
• Firefox 39 Released on 2015-07-02
• Firefox for Android 39 Released on 2015-07-02
• Safari 11.1 Released on 2018-04-12
• Safari on iOS 11.3 Released on 2018-03-29

View web-platform-tests results for this feature - View the feature source file (dist) - Edit the feature - Report an issue about this feature