Adblock Plus Adblock Plus

One of the most popular free ad blockers for Firefox. Block annoying ads on sites like Facebook, YouTube and all other websites. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

Adblock Plus is a Firefox add-on by Adblock Plus. It has 4,923,896 daily active users and an average rating of 4.47. The latest version is 3.14.2 and was updated a month ago. Within Firefox Browser Add-ons, its overall ranking is #2.

Get the free ad blocker for Firefox. With almost 500 million downloads to date!

✓ Block annoying ads and popups
✓ Block video ads on sites like YouTube 
✓ Speed-up loading time on pages
See more
Risk impact

Adblock Plus requires a lot of risky permissions and is not safe to use. Avoid installing this add-on unless you absolutely trust this publisher.

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypass your security settings, and access your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Risk likelihood

Adblock Plus has earned a fairly good reputation and likely can be trusted.

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Browser Add-ons, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on, especially ones with higher risk impact and/or higher risk likelihood.

Subscribe to the premium plan to see more risk analysis details
User reviews
by qubitspin, 2022-09-29

by Vivian De Smedt, 2022-09-29

by megaman1410, 2022-09-28
View all user reviews

The manifest file declares the requirements and permissions that a Firefox add-on will have access to. By reviewing the manifest, you may be able to determine if a Firefox add-on is over-reaching (for example, if an extension is overriding your new tab page, or search provider, or requesting access to your web activities without any good reason).

  "author": "eyeo GmbH",
  "applications": {
    "gecko": {
      "strict_min_version": "63.0",
      "id": "{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}"
  "content_scripts": [