$ adblock-test --run
Block You Test — is your ad blocker actually working?
Ten-second live test from Block You Test. We load three kinds of bait ads — page elements, ad images, ad-network scripts — and show you exactly which ones your blocker catches.
Ad blocker test
Four baits, four filter layers. If they vanish, your blocker is working.
Ad-style page elements
classic ad class names (adsbox, ad-banner, pub_300x250) hidden by cosmetic filters
Ad image from an /ads/ path
URL rules block requests to ad-style paths
Real ad-network script (googlesyndication)
network filters cut the connection to the ad domain itself
Classic tracker script (google-analytics)
privacy filters and stricter lists block known trackers
Run the test
One click. Three bait ads load in the page.
Watch the verdict
Each bait shows BLOCKED or SHOWN, layer by layer.
Fix what is off
Whitelist issue? Stale filter lists? The verdict tells you where to look.
Test your ad blocker in ten seconds
You installed an ad blocker months ago. Ads quietly crept back — a pre-roll here, a banner there — and now you are not sure whether the blocker is even running. Block You Test answers that in one click. We place the same three baits that real ad scripts use, and show you exactly which ones your blocker catches and which ones slip through. No extensions, no downloads, nothing to configure.
What an ad blocker actually blocks
A blocker is three filters stacked together. Cosmetic filters hide elements on the page that look like ads — the boxes with "adsbox" or "ad-banner" in their class names. URL filters refuse any request whose path screams advertising, like anything under /ads/. Network filters go further and cut the connection to known ad servers before a single byte arrives. Our test drops one bait into each layer, so a partial or misconfigured blocker shows up immediately: two baits blocked, one sailing through.
Keep your blocker honest
Ad delivery changes weekly, and filter lists are community projects that chase it. If your verdict says baits are showing, the fix is usually boring: open your blocker, update the filter lists, and remove sites you whitelisted in a hurry. For YouTube specifically, ads and videos share domains, so blockers need dedicated rules that go stale fast — our YouTube ad blocker guide covers what still works and how to re-test after every change.
Ad blocker test — FAQ
How the test works and what your verdict means.