Update v0.3

• All tests of experimental features are now complete.
• Significant performance and detection improvements.
• A major update is coming soon.
• AI-powered automatic YouTube scanner is in development.
• QntmBlock is now approved on the Firefox Add-ons Marketplace—thanks to the Firefox team!

Installation

• Firefox: Install from Add-ons
• Chrome/Chromium: Not available on the Chrome Web Store (more about that is below), but you can install manually:
  1. Download or clone this repository.
  2. Open Chrome and go to chrome://extensions.
  3. Enable "Developer mode" (top right).
  4. Click "Load unpacked" and select the extension folder.
  5. (Optional) For debugging, you can add the debug addon from the repo in the same way.

About Chromium (Chrome Web Store)

I’ve decided not to publish the extension on the Chrome Web Store. The required developer registration fee just to list an extension feels absurd to me, and I’m not willing to pay it. In my view, this pay-to-publish approach reflects poorly on the Chromium ecosystem.

That is all from me. Enjoy the extension!

License

Apache License 2.0

Copyright 2025 Quantum Browser

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0


Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Changes in the v0.2 update:

Major performance optimizations again (This time the improvement is about like 60%)
Polished and cleaned up the whole JS code
Polished new experimental ad-detection methods
Updated DOM detection (YouTube somehow started detecting our methods)
Added Legit mode and Randomization (Randomization is part of the Legit mode)
Reworked the blur effect
Added new effect Mask , this completely covers the ad with YouTube BG color (Depends if you have dark or light mode)
Added dynamic detections, so its not likely to YouTube find out

Waiting for?

Completing the tests of experimental features

About Chromium (Chrome Web Store) - still the same:

I’ve decided not to publish the extension on the Chrome Web Store. The required developer registration fee just to list an extension feels absurd to me, and I’m not willing to pay it. In my view, this pay-to-publish approach reflects poorly on the Chromium ecosystem.

That is all from me. Enjoy the extension.