Q&A Evaluate your content blocker with Ad Block Tester

CyberTech

Level 36
Verified
Nov 10, 2017
2,490
How good is a content blocker? You could say that it is great if undesirable content is blocked while content that you want to access is not, but that is only taking content that you could identify visually into account. Most content blockers reveal information about the level of blocking, e.g. how many items were blocked and how many were not.

Ad Block Tester is a free service on the Internet to evaluate content blocking solutions. It is not designed to be a benchmark, but it reveals the level of blocking against a set of hosts that are very popular.

Just visit the Ad Block Tester website to get started. The test runs for a couple of seconds before the results are displayed. You get a percentage score, e.g. 84% of hosts blocked, and a list of blocked and allowed hosts afterwards.

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rndmblk

Level 3
Nov 18, 2020
93
I got 84% as well on Edge on mobile. Of as much interest as the percentage was the list of URLs they were testing against. I had heard of the ad, analytics and social ones but not the error tracker urls.

In the last days this tool had of lot of attention , but seems something it's not clear . The test it's not a benchmark tool , and is not a race about who make 100% , it's a reference tool to check if you are blocking any of the host , in this case are used the most important hosts by category and popularity as reference
 

SecureKongo

Level 21
Verified
Feb 25, 2017
1,089
82% on mobile (Safari) and 94% on Desktop (Firefox)

Desktop:
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Nightwalker

Level 22
Verified
Trusted
Content Creator
May 26, 2014
1,157
How's that?

In the last days this tool had of lot of attention , but seems something it's not clear . The test it's not a benchmark tool , and is not a race about who make 100% , it's a reference tool to check if you are blocking any of the host , in this case are used the most important hosts by category and popularity as reference.

Blocking everything may lead to sites not working correctly and so on, thats why my favorite DNS list is OISD (present in NextDNS).

Ps: I got 100 % and I would be totally okay if I got less.

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SecureKongo

Level 21
Verified
Feb 25, 2017
1,089
Blocking everything may lead to sites not working correctly and so on, thats why my favorite DNS list is OISD (present in NextDNS).

Ps: I got 100 % and I would be totally okay if I got less.

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True, but the sites that I added to the denylist are barely/never used in my case. And the ones blocked before (94%) didn't cause any problems either. But you are right in general. (y)
 
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