: Do ad-impressions count if the user is using an adblocker? Companies serving advertisements have a few different ways of billing you, with the most common being CPI (Cost Per Impression) and

@Alves908

Google calculates Impression only when an ad call is made from the browser after reading your webpage code. When an Ad Blocker is switched on with the filter to block ad server or domain. Then browser will ignore reading the tags, hence there will be no call made to Ad server. So it won't count as an impression as non request is being made and hence you won't be charged.

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@Samaraweera270

Regarding one of the most popular advertisement services, Doubleclick, to have an ad impressions, there should be a call initially in the javascript script tag to retrieve the ad content.

Some ad blockers prevent the http request blocking specific domains, while others may be blocking images.

If the ad blocker filter by domain then it won't count as an impression as non request is being made.

This is the full ad measurement process


The JavaScript ad tag GA_googleFillSlotinvokes an HTTP request to the
ad server. The ad server selects an advertisement and then delivers a
"200" server code with JavaScript content directing the browser to the
advertising content, whether a Google hosted creative or third-party
ad tag. Counting occurs when the ad server acts upon the ad call and
issues the ad content. In this implementation, measurement occurs
based on the ad servers selecting and returning the ad content, and in
advance of the ad being displayed to the user.


Popup blockers


Ad impressions delivered via pop-up or pop-under ads (collectively
referred to as pop-up hereafter) may be blocked from displaying by a
pop-up blocker. When DFP ad tags are properly implemented by the
publisher, a pop-up blocker, which would prevent the pop-up window
from opening, would also prevent the ad tag (which also serves as the
measurement asset) from being requested, and therefore, the ad
impression would not be recorded. However an impression will be
recorded if the ad creative opens up a pop-up although the pop-up
might be blocked by a pop-up blocker


Full ad measurement statement when there is an ad blocker:


Ad blocking software: With certain browsers or tools, users have the
ability to block content (including advertisements) based on the
domain from which the content is being requested. This may include
either image blocking from the selected domains, or the exclusion of
any requests being made to the designated domains. Ad blocking
techniques or software that prevents any requests to the DFP domain
may have no impact on the impression measurement as this situation may
prevent both the ad request and the measurement, resulting in an
accurate count of zero impressions. However, ad blocking software that
blocks images or content from the creative server, but not DFP ad
servers, may result in an overstatement if the ad request is processed
and counted, but the browser subsequently prevents the display of the
ad creative. Additionally, certain ad blocking tools may also be
customized by the user to block content based on the image size. The
software compares the size of the image/creative to the set parameters
of the filter and if it matches the parameters, the image is blocked,
potentially resulting in overstatement of the impression


.
support.google.com/dfp_premium/answer/141811?hl=en

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