<link rel="preconnect">

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.

Baseline Status: Achieved Widely Available on Jul 15, 2022 (Cross-browser Newly Available since Jan 15, 2020).

Desktop Browser Engine Support

Google Chrome

46

Supported

Mozilla Firefox

39

Supported

Apple Safari

11.1

Supported

Microsoft Edge

79

Supported

Mobile Browser Engine Support

Chrome Android

46

Firefox Android

39

Safari iOS

11.3

Specifications and References

Specification ↗ Feature XML ↗

MDN Browser Compat Data Keys:

html.elements.link.rel.preconnect ↗