AwwBlock is a browser extension designed to replace online advertisements with calming, photorealistic images of animals such as capybaras, ducks, puppies, and kittens. Rather than blocking ads outright, it detects ad slots on web pages and swaps them for AI-generated animal photos, aiming to create a softer and less overwhelming browsing experience. The extension is intended for users who wish to reduce the visual clutter of traditional ads and enjoy a more pleasant, tranquil internet environment.
The tool identifies ad spaces by recognizing containers from known ad networks—including AdSense, Google Ad Manager, DoubleClick, Taboola, Outbrain, and FreeStar—as well as elements that match standard IAB ad unit sizes and exhibit characteristics typical of ads. Once an ad slot is detected, AwwBlock selects an animal image whose shape matches the slot, ensuring the replacement fits seamlessly and does not appear stretched or distorted. The extension also adapts images responsively when the browser window is resized and employs a per-slot guard to maintain the animal image in place, even if ad scripts attempt to re-inject ads. It is conservative in its approach, avoiding non-ad elements that merely share ad-like dimensions, and skips hidden or duplicate slots to prevent empty or phantom boxes from appearing.
AwwBlock is built as a Manifest V3 extension and is available for Chrome and Edge browsers, with experimental support for Firefox. Installation is performed by loading the extension unpacked from a downloaded ZIP file, rather than through a browser store. Users can toggle the extension on or off, select which animals appear in rotation, and view a count of images deployed. The extension requests only storage permission and does not intercept network requests, making it unaffected by recent browser changes that impact traditional ad blockers.
The creation of the animal images involves a manual crop studio tool, allowing the developer to load photos, select ad sizes, and frame images by hand for optimal composition. AwwBlock is distributed under the MIT license and its source code is available on GitHub.
In the Browser DevTools & extensions space, AwwBlock takes a focused approach. It focuses on being distracted or annoyed by intrusive web ads while browsing. It is built as an open-source project for web users seeking a calmer browsing experience. AwwBlock is open source under the MIT license. It runs on the web and the command line.
Behind AwwBlock is Benjamin Mullins, and the product first shipped in 2026. Development happens publicly on GitHub with 3 commits in the last 90 days. Key capabilities include ad replacement, AI-generated images, and browser extension.
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