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SPECIFICTION
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Adblock Fast

adblockfast.com

Free plan WebWindowsiOSAndroidBrowser extension
Visit adblockfast.com
Spec score 8.5 #9 of 29 in Ad Blocking Software

What it is

Adblock Fast is a free ad blocker for desktop computers and mobile browsers. It uses 12 optimized filtering rules derived from EasyList and Bluhell Firewall; the maker says these rules are intended to speed page loading while using less CPU, memory and storage. On Android it blocks ads in Samsung Internet 4.0 and later, and on iOS it works in Safari. The maker lists support for Windows 7 and later and a Chrome desktop extension; the repository marks Opera support as discontinued. In Chrome, the toolbar button can disable blocking for a site, and the choice is remembered when a user returns. Mobile users can choose the default Fast rules or an experimental Faster mode with more comprehensive, current rules. The maker says Faster mode anonymously crawls common websites using background bandwidth without cookies or other personal information. The blocker intercepts HTTP traffic and injects CSS and JavaScript into visited pages to block requests and hide ad elements. Its code is open source under the GNU General Public License version 3 or later, subject to listed exceptions. The app does not block ads in other Android or iOS apps.

Spec sheet

Purpose
Adblock Fast is an ad blocker for desktop computers and mobile browsers.Read 7 Oct 2026 · adblockfast.com
Free plan
YesRead 21 Sep 2026 · adblockfast.com
Support
The maker directs users with questions or comments to Facebook or Twitter.Read 7 Oct 2026 · github.com
Headquarters
Covina, California, United StatesRead 28 Sep 2026 · adblockfast.com
Android
On Android, it blocks ads in Samsung Internet 4.0 and later, not in other apps.Read 7 Oct 2026 · github.com
Browser extension
The maker lists a Chrome desktop extension; the repository marks Opera support as discontinued.Read 7 Oct 2026 · github.com
Browser support
multiple-browsersRead 21 Sep 2026 · adblockfast.com
Device coverage
desktop-and-mobileRead 21 Sep 2026 · adblockfast.com
Experimental mode privacy
The maker says Faster mode anonymously crawls common websites using background bandwidth and no cookies or other personal information.Read 7 Oct 2026 · github.com
Filtering
It uses 12 optimized filtering rules, and its ruleset is derived from EasyList and Bluhell Firewall.Read 7 Oct 2026 · github.com
iOS
On iOS, it blocks ads in Safari, not in other apps.Read 7 Oct 2026 · github.com
Mobile modes
Mobile users can choose default Fast rules or an experimental Faster mode with more comprehensive, up-to-date rules.Read 7 Oct 2026 · github.com
Open source
The repository says the program is distributed under the GNU General Public License version 3 or later, subject to listed exceptions.Read 7 Oct 2026 · github.com
Performance claim
The maker says the rules are designed to accelerate page loading while using less CPU, memory, and storage.Read 7 Oct 2026 · adblockfast.com
Permissions
The maker says the blocker intercepts HTTP traffic and injects CSS and JavaScript into visited pages to block requests and hide ad elements.Read 7 Oct 2026 · github.com
Site controls
The Chrome toolbar button lets users unblock ads for a site, and the choice is remembered when they return.Read 7 Oct 2026 · github.com
Windows
The maker lists support for Windows 7 and later.Read 7 Oct 2026 · github.com

Plans and prices

Free Free Ad blocking · Open-source code Read 21 Sep 2026 · adblockfast.com
Adblock Fast Free Free to use · source code free to modify Read 7 Oct 2026 · adblockfast.com

Every Adblock Fast plan and price →

Strong points and limits

Strong points

  • Free and open source.
  • Uses 12 filtering rules.
  • Chrome users can save site-specific unblock choices.
  • Mobile users can select Fast or experimental Faster rules.

Limits

  • Android blocking is limited to Samsung Internet.
  • iOS blocking is limited to Safari.
  • Opera support is discontinued.
  • Does not block ads in other apps.

Who it suits

It suits people seeking a free blocker for supported desktop browsers or mobile browsing in Samsung Internet or Safari. Users who want ad blocking inside other mobile apps should note that those apps are not covered.

Verdict

Adblock Fast provides desktop and mobile-browser ad blocking, with different browser coverage by platform. Check that your browser is supported, and note the HTTP interception and page-injection approach it uses.

Where Specifiction places it

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