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AdBlock for Firefox version history - 25 versions

AdBlock for Firefox by AdBlock

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AdBlock for Firefox version history - 25 versions

  • Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.

  • Latest version

    Version 6.51.0

    Released Oct 27, 2026 - 5.62 MB
    Works with firefox 128.0 and later
    • Updated snippets to 2.18.0
    • Fixed an error when the browser reported a page navigation without a URL.
    • Fixed new installs sometimes showing the "settings reset to default" warning,
      or only getting the default filter lists on a second attempt, when a filter
      from an experiment was added during startup.

    Source code released under GNU General Public License v3.0 only

    Download Firefox and get the extension
    Download file

  • Older versions

    Version 6.50.0

    Released Oct 19, 2026 - 5.46 MB
    Works with firefox 128.0 and later
    • Fixed: Several issues with the blocked-request count shown on the toolbar
      icon. It could reset to zero partway through loading a page, or include
      requests blocked on the previous page. After allowlisting a site, the badge
      is now hidden straight away instead of continuing to count up or showing a
      stale number.
    • Replaced vendored copies of jquery, chart.js and the Lato font with
      their npm packages, moved the modified croppie fork into
      vendor/croppie, and kept the Material Icons font vendored (the npm
      package's un-subsetted font measurably slowed down page load), continuing
      the third-party dependency cleanup started with the LICENSE-THIRD-PARTY
      work.
    • Fixed links in explanatory texts on the options page reacting to clicks on
      the whole text instead of just the link text.
    • Fixed an issue on the options page where clicking anywhere on a settings or
      filter list row, including its name and description, toggled the setting or
      subscription. Only the checkbox or switch toggles it now.
    • Added the latest recorded change of each filter list subscription, including
      removed ones, to the debug information included in bug reports.
    • Fixed an issue on Manifest V3 where the browser could stop the background
      service worker part way through startup or while applying a filter list
      update, which could leave filter lists missing or only partly updated.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.46.0

    Released Sep 15, 2026 - 5.57 MB
    Works with firefox 128.0 and later
    • Added an experiment to test impression caps on on-page dialogs.
    • Updated snippets to 2.16.0

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.45.4

    Released Sep 1, 2026 - 5.56 MB
    Works with firefox 128.0 and later
    Fixed: A "settings reset to default" warning could appear even though
    nothing had actually been lost, on both new and existing installs. On
    Manifest V3, this also covered the browser terminating the background
    service worker part way through adding or updating filter lists — a
    genuine risk of ending up with subscriptions missing or incomplete —
    which the extension now guards against by keeping the service worker
    alive while this is in progress.
    Fixed: The conflict-detection partner-extension ping could throw an
    uncaught error on Chromium browsers when it reached a Firefox-only
    extension ID in its list, which also silently skipped pinging every
    extension listed after it.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.45.3

    Released Aug 25, 2026 - 5.55 MB
    Works with firefox 128.0 and later
    Fixed: Circumvention filters relying on the hide-if-matches-xpath3 snippet silently failed to hide anything and logged ReferenceError: fontoxpath is not defined to the console.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.45.2

    Released Aug 18, 2026 - 5.45 MB
    Works with firefox 128.0 and later
    • Updated snippets to 2.15.0
    • Fixed: The downloaded debug data file showed filter list update dates from 1970 instead of the actual dates.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.45.1

    Released Aug 11, 2026 - 5.45 MB
    Works with firefox 128.0 and later
    Updated snippets to 2.14.0
    Fixed: Blank space appeared to the right of the popup menu in Microsoft Edge.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.45.0

    Released Aug 4, 2026 - 5.38 MB
    Works with firefox 128.0 and later
    • The reverse-trial on-page dialog is now suppressed when another eyeo extension
      has already shown one on the same page, so only one dialog appears when both
      extensions are installed.
    • Removed a redundant data collection option from the General options page. Data
      collection is now controlled solely by the "Opt-out of all data collection in
      the AdBlock extension" option.
    • Dropped support for Chrome/Edge below 127.0, Firefox below 128.0, and Opera
      below 113.0 in accordance with the browser deprecation policy.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.44.0

    Released Jul 21, 2026 - 5.38 MB
    Works with firefox 75.0 and later
    This release contains only minor updates and under-the-hood changes.

    Updated snippets to 2.13.0
    Fixed: New tab campaign tabs could be opened multiple times for some users
    due to a race condition between tab events and processed IPM commands.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.43.1

    Released Jun 30, 2026 - 5.4 MB
    Works with firefox 75.0 and later
    This release contains only minor updates and under-the-hood changes.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.43.0

    Released Jun 23, 2026 - 5.43 MB
    Works with firefox 75.0 and later
    • Inline CSS filters are now applied using CSS stylesheets where possible
      instead of element hiding emulation. This results in a performance
      improvement, but does not otherwise affect functionality.
    • Updated snippets to 2.12.0
    • Fixed: Addressed certain errors that have the potential of causing CPU spikes for some users (OM-808).

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.42.2

    Released Jun 16, 2026 - 5.46 MB
    Works with firefox 75.0 and later
    This release contains bugfixes and under-the-hood changes.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.42.1

    Released Jun 9, 2026 - 5.46 MB
    Works with firefox 75.0 and later
    This release contains only minor updates and under-the-hood changes.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.42.0

    Released Jun 2, 2026 - 5.46 MB
    Works with firefox 75.0 and later
    6.42.0 - 2026-06-02

    Added support for experimental filters delivered via experiment flags. When an experiment flag whose ID ends in :filters is active, the filters it carries are applied as user filters and cleaned up automatically when the flag changes or is removed.
    Updated snippets to 2.11.0

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.41.3

    Released May 26, 2026 - 5.46 MB
    Works with firefox 75.0 and later
    This release contains bugfixes and under-the-hood changes.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.41.1

    Released May 12, 2026 - 5.47 MB
    Works with firefox 75.0 and later
    • Moved heavy snippets out of the content script into the background worker, reducing the size of the code we need to inject to each frame.
    • Added support for inline CSS styles in element hiding and element hiding
      emulation filters. This allows setting custom styling rather than just hiding
      or removing the element.
      For example: example.com##.aside { margin: 0; background: none }

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.41.0

    Released May 5, 2026 - 5.35 MB
    Works with firefox 75.0 and later
    This release contains bugfixes and under-the-hood changes.
    • Fixed: close-tab feature did not work on myaccount.getadblock.com and the
      *.dev.getadblock.com staging hostnames because trusted origins were
      registered as wildcard match patterns instead of exact origins.
    • Reverse-trial messaging is now driven by remote experiment configuration,
      enabling copy, timing, and flow variations to roll out without an
      extension release
    • Updated snippets to 2.10.1

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.40.0

    Released Apr 22, 2026 - 5.36 MB
    Works with firefox 75.0 and later
    This release contains bugfixes and under-the-hood changes
    and adds extension state to the Support tab,
    showing active filter lists, filter and rule counts,
    and DNR dynamic rule usage.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.39.0

    Released Apr 7, 2026 - 5.32 MB
    Works with firefox 75.0 and later
    • Enabled all premium filter lists by default for free trial users.
    • Fixed reverse trial dialog events: dismiss button now correctly sends a close
      event, and the learn more link now sends a CTA event.
    • Fixed: In-product messaging campaign tabs opened multiple times for some users.
    • Added close-tab feature that allows getadblock.com pages to request the
      extension to close the current tab via a background message handler and
      content script.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.38.0

    Released Mar 25, 2026 - 5.47 MB
    Works with firefox 75.0 and later
    • Excluded all parameters from install URL and uninstall URL when the user is opted out of data collection.
    • Add a reverse trial campaign to give some users a free preview of our improved premium snippet offering.
    • Disabled new tab campaigns for users in reverse trial experiment (no-issue)

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.33.6

    Released Jan 27, 2026 - 5.7 MB
    Works with firefox 75.0 and later
    This release contains only minor updates and under-the-hood changes.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.33.2.1

    Released Dec 16, 2025 - 5.67 MB
    Works with firefox 75.0 and later
    This release contains only rules updates for Manifest v3 extensions.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.33.1

    Released Dec 2, 2025 - 5.67 MB
    Works with firefox 75.0 and later
    This release contains bugfixes and under-the-hood changes.

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.33.0

    Released Nov 25, 2025 - 5.66 MB
    Works with firefox 75.0 and later
    New filter type, new snippets, small bugfix
    • Add support for $addheader filter type
    • Updated snippets to 2.4.5
    • Fixed a small filter hits bug in the devtools

    Source code released under GNU General Public License v3.0 only

    Download file

  • Version 6.32.1

    Released Nov 18, 2025 - 5.66 MB
    Works with firefox 75.0 and later
    Updated snippets to 2.4.3

    Source code released under GNU General Public License v3.0 only

    Download file