Anti-adblock for WordPress: detection, setup and recovery

WordPress powers a large share of the ad-supported web, from small blogs to mid-sized publications. Most of those sites monetise through display advertising, and a meaningful slice of their audience runs an ad blocker. Every blocked pageview is inventory that was requested by the reader but never earned anything.

The loss is invisible by default. Your ad network reports impressions that were served, not the ones that were blocked before they could load. A WordPress dashboard shows traffic, not lost revenue. Without a detection layer you simply cannot see the gap, so it never gets addressed.

Adding an anti-adblock script is the first step to making that gap visible. Before you change anything about your ad setup or design a recovery message, you want a reliable count of how many of your visitors block ads. On many WordPress sites that number is higher than the owner expects, particularly in tech, gaming and news niches.

An anti-adblock script should load as early and as reliably as your ad tags do. The cleanest place is the document head, so detection runs before the recovery decision needs to be made. On WordPress you have three sensible options.

The first is editing your theme's header.php directly and adding the script tag just before the closing head tag. This works but it is fragile: a theme update can overwrite the file. If you go this route, use a child theme so your change survives updates. The second option is a header-and-footer scripts plugin, which exposes a settings field for head markup and is update-safe by design. This is the recommended path for most site owners because it needs no code and no child theme.

The third option, for sites with a custom or block-based theme, is to hook into wp_head from a small custom plugin or a code-snippets plugin. Whichever you choose, the goal is the same: one async script tag in the head, loaded on every page. AntiAdBlock Core ships exactly one such tag, around 12 kB gzipped, so it does not meaningfully affect your load time.

An anti-adblock script does not replace your ad network and does not conflict with it. AdSense, Mediavine and Ezoic all serve ads through their own tags; the detection script simply observes whether those tags were able to load and run a recovery flow when they were not. The two layers are independent.

There is one rule worth respecting with all three networks: do not use anti-adblock to serve their ads to blocked users in a way that violates their policies. The safe pattern is to detect the blocker and then show your own recovery message, a polite request to allow ads, or a link to an alternative such as a newsletter or membership, rather than trying to force network ads past the block.

Ezoic and Mediavine sites in particular tend to have a more complex tag setup, often with lazy-loaded ad units. A detection script that runs in the head and waits a short, deterministic window before deciding will coexist with lazy loading cleanly. Detection and ad rendering are not racing each other.

The most common mistake is placing the script in the footer or loading it after a long chain of other deferred scripts. By then the recovery decision is late and the user may have already left. Keep the detection script in the head and async.

The second mistake is an aggressive recovery experience. A hard wall that blocks all content on the first pageview tends to push readers away and can hurt search performance. A measured approach, a dismissible overlay, or a wall only after a few pageviews, recovers more revenue over time because it keeps the audience.

On consent: a good anti-adblock script should be cookieless and collect no personally identifiable information, which keeps it clean under the GDPR. AntiAdBlock Core produces only daily aggregate counts and sets no cookies, so detection itself does not need a consent prompt. You still manage consent for the ad network as you already do; the detection layer simply does not add a new obligation.

Once the script is live, the first number to watch is your ad-block rate: the share of pageviews where a blocker was detected. This is your baseline. It tells you how large the opportunity is before you do anything about it.

When you turn on a recovery flow, the metric that matters is the recovery rate, the share of blocking visitors who, after seeing your message, allow ads or take the alternative action you offered. AntiAdBlock Core reports this with a per-detector breakdown so you can see which signals fired and model the revenue involved.

Give any change at least one to two weeks before judging it. Ad-block rates vary by day of week and by traffic source, and recovery messaging needs a reasonable sample. Treat it as iterative: measure the baseline, ship a gentle recovery message, read the recovery rate, then adjust tone and timing. WordPress makes the deployment trivial; the discipline is in measuring patiently.

For a broader update on which anti-adblock approaches hold up on modern browsers, including Chrome's MV3 blockers that affect WordPress sites like any other, anti-adblock script 2026 covers what has changed since classic WordPress snippets were written. If you want to go beyond detection and build a full recovery funnel on WordPress, how to block adblock on your website covers the implementation decisions that apply across any CMS.