Free Automated Adblock Tester
Well first of all, 26% of all internet users use Adblocker, and usage is apparently increasing 2% a year (according to one source anyway). The trend is only accelerating, with the advent of adblocking browsers and privacy focused browsers like Brave. The trend is growing because lets face it, the vast majority of users do not enjoy ads (unless you happen to be an advertiser yourself, tsk tsk). On a slightly related note, advertising people and salesman in general are among the least trusted type of professions.
Glen Allsopp also mentioned it in the Detailed SEO course that you should do this check! It’s simple to do and you might be surprised to see what you find.
One important way Adblockers function is by simply blocking a Javascript (JS) or stylesheet (CSS) from loading on the page. Some common examples are Google Analytics, Google Adsense.
Unfortunately, sometimes it does this by what’s known in the programming world as a “catch-all” rule. I’ve even some Adblockers block ALL content from a certain domain (ouch). For the programmer-savvy among you, these are regexps using *.
