Excluding "web beacons" from WPT analysis

Hello - Is there a way I can exclude “web beacons” or “pixels” from WPT analysis ? I am trying to measure the performance of a page but without its beacons.

You can block them in the “block” tab of the advanced settings if you know the domains they beacon to.

Thanks Patrick. That works. One more question. Does the blocking functionality in WPT work with regular expressions provided in the ‘Block’ tab ? For example, if I wanted to block all .jpg images from xyz.com but not all .js files. Thanks !