Some test sites say blocking is active, some say not

[jacob.salmela]

Why don't some ad blocker tests work with Pi-hole?

Ad blocking plugins typically load the entire Webpage (ads included) and then run some scripts to detect and hide the ads. This is the sort of thing ad blocking testers will test for. [57] Since Pi-hole prevents ads from being downloaded in the first place by intercepting the DNS request, these traditional ad block testers will often present a false-positive since they are not checking for this sort of activity. It's not always the case, but they aren't the most reliable way to test if your …