Safari also apply “HDR” to CSS filter: brightness() with value greater than 1. Instead of the over-exposure effect, this portion of the screen will be brighter.

Safari also apply “HDR” to CSS filter: brightness() with value greater than 1. Instead of the over-exposure effect, this portion of the screen will be brighter. You must have an HDR or EDR-capable screen and there must be an HDR video playing to activate the HDR context (can be <video> playing somewhere in a webpage). Lunar app's website used this trick! Check it out. https://lunar.fyi/#xdr https://lunar.fyi/#xdr