Private local benchmark

Ad blocker test lab.

Test the blocker you already trust with one calm scan. It checks ad scripts, tracker pixels, analytics services, cosmetic hiding rules, and a small set of network reachability signals.

1 Pick a scan

Quick, Standard, or Deep.

2 Let it probe

Everything runs in your browser.

3 Fix open rows

Use categories to tune your blocker.

What this checks

Choosing an ad blocker and need a clean place to compare it? Run the same scan against SimplyAdBlocker, AdBlock, AdBlock Plus, AdGuard, Ghostery, uBlock Origin, AdBlocker Ultimate, or another blocker you use.

Advertising scripts Tracker pixels Analytics services Cosmetic filters
Score under 90/100?

Open the rows that slipped through, check the category, then try SimplyAdBlocker for a quieter setup with no accounts and no telemetry.

Improve your score with SimplyAdBlocker
01

Compare one blocker at a time. Multiple blockers can overlap and make the score less reliable.

02

Refresh cleanly. If old results stay visible, do a hard refresh with cache cleared before running again.

View results

A Deep scan starts 5 seconds after first load. Results stay in your browser.

Results

Live scan details.

Blocked means your blocker caught it Open means the request or bait got through Warning means the signal timed out or was unclear
01

Cosmetic filters

Static and dynamic ad-shaped boxes show whether your blocker hides empty ad spaces.

02

Scripts and pixels

Local baits and third-party probes check ad scripts, analytics, social pixels, and error monitors.

03

Network signals

A small set of reachability checks helps spot common ad endpoints that still answer from the browser.

Cosmetic bait zone

Harmless traps used by the scan.

If these boxes disappear, cosmetic filtering is doing its job.

Tracker pixel
Dynamic ad

Plain answers

How to read the score.

85-100 Strong setup

Most ad scripts, trackers, and cosmetic bait are blocked. Review any open rows, but you are in good shape.

60-84 Needs review

Your blocker is working, but some categories are slipping through. Start with Open rows under ads, analytics, and social trackers.

0-59 Tune filters

The blocker may be off, too permissive, or missing common lists. Try one blocker at a time, update lists, then run Deep scan again.

What should I fix first?

Start with Open rows in Ad networks, Analytics, Social trackers, and Cosmetic filtering. Those categories usually have the biggest day-to-day browsing impact.

What does “Blocked” mean?

The script, pixel, request, or ad-shaped box failed to load or became hidden. That usually means your blocker caught the test case.

What does “Open” mean?

The test case loaded or stayed visible. It does not always mean your blocker is bad, but it is the row to inspect if your score is lower than expected.

What does “Warning” mean?

The browser could not give a clean answer. Timeouts, strict browser settings, flaky third-party hosts, or network conditions can create warnings.

Why can a test say “open” even when my blocker works?

Some providers allow simple image or script probes while still blocking real ad behavior elsewhere. Treat the score as a practical snapshot, then inspect the detailed rows.

Does this page upload my results?

No. The checks run locally and results are rendered in your browser. This site does not include third-party analytics.

Why is there only a small network reachability check?

A browser page cannot reliably prove device-level or resolver-level blocking. This test keeps network reachability small and uses it only as a supporting signal beside scripts, pixels, and cosmetic checks.

Why do blocker apps and browser extensions score differently?

They block at different layers. Apps can stop whole endpoints, while extensions can hide page elements and block specific script paths. Running several blockers together can also create false positives.

Should I aim for 100/100?

No. A very high score is nice, but a perfect score can require aggressive lists that may break sites. A strong score with normal browsing working well is the better goal.