Step 5 here - https://support.google.com/chrome/answer/1385029?hl=en-GB.

Or https://developer.microsoft.com/en-us/microsoft-edge/platfor...

Looks like Edge only prefetches when specific link tags give prefetch prompts (Resource Actions per W3C specs) whilst Chrome appears to do things more speculatively.

Not sure about IE, FF and other approaches.