Is My Ad Blocker Working?

Test if your ad blocker is blocking ads from major providers

Running tests...

Ad Banner Class

Element with class "ad-banner"

Google Ad ID

Element with id "google-ad"

Ad Script Load

Script from ad-related URL pattern

Double-Click Domain

Request to ad serving domain

Ad Iframe

Iframe with ad-related source

Adsense Class

Element with class "adsbygoogle"

How it works

This tool runs several detection tests to determine if an ad blocker is active in your browser. It creates DOM elements with common ad-related class names and IDs (like "ad-banner" and "adsbygoogle"), then checks if they are hidden by the ad blocker. It also attempts to load resources from known advertising domains. If these elements are hidden or requests are blocked, it indicates an active ad blocker. The more tests that are blocked, the more comprehensive your ad blocking protection.

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FAQ

Frequently Asked Questions

How does this ad blocker test work?
This tool attempts to load resources from known ad networks (like Google Ads, Facebook Pixel, and other major providers). If your ad blocker prevents these resources from loading, the test detects the block and reports it. Each blocked resource increases your protection score.
What is a good ad blocker score?
A score of 80-100% means your ad blocker is effectively blocking most major ad networks. No ad blocker blocks everything — some trackers use techniques that are hard to detect. The most effective blockers score 90%+ on this test.
Which ad blocker should I use?
uBlock Origin is widely recommended for its effectiveness and low resource usage. It works on Chrome, Firefox, and Edge. For Safari, consider AdGuard. Built-in browser protections (Brave Shields, Firefox Enhanced Tracking Protection) also score well.
Can ad blockers break websites?
Yes, aggressive ad blocking can sometimes break website functionality by blocking scripts needed for features like login forms, payment processing, or video players. Most ad blockers let you whitelist specific sites where you experience issues.
Do ad blockers protect my privacy?
Ad blockers primarily block ads, but many also block tracking scripts, analytics pixels, and fingerprinting attempts. This significantly improves your privacy. However, they don't replace a VPN or protect against all forms of tracking.