New in version 2.6.10

August 16th, 2015
  • suppress_first_run_page preference introduced by previous release can now be preconfigured by machine administrators via setting extensions.adblockplus.preconfigured.suppress_first_run_page Firefox preference.
  • Issue reporter: Made sure there is always enough space to display report data.
  • Issue reporter: No longer intercepting right-clicks on the resulting report link, only left- and middle-clicks result in the report being opened.
  • Implemented an alternative format for subscription links that is easier to use in forums or emails: instead of abp:subscribe?location=foo.
  • Fixed subscription links in multi-process Firefox
  • Added global opt-out for notifications.
  • Notifications are shown immediately after download rather than waiting for a browser restart.
  • Removed inconsistent behavior (breaks backwards compatibility): exception rules starting with http:// or https:// no longer imply $document option.
  • Reduced the initial delay for filter lists and notification updates after browser startup.
  • First-run page: Fixed social buttons being broken starting with Firefox 38.

New in version 2.4.1 (January 15th, 2014)

  • Added support for the upcoming Firefox Australis theme.
  • Default icon location is the navigation toolbar again (add-on bar is going away).
  • Fixed image preview in the list of blockable items.
  • Fixed keyboard shortcut on Mac OS X (Control key was used instead of Command).
  • Fixed: Changes to Adblock Plus options didn't always persist.

New in version 2.4 (October 10th, 2013)

  • Improved first-run page
  • Fixed: Adblock Plus icon wasn't showing up on browser startup for some users
  • Fixed: Redirect blocking wasn't working in current Firefox versions
  • Fixed: Issue reporter fails to process some console errors
  • Fixed: Adblock Plus fails to start up when updating in current Firefox nightly builds (workaround for bug 924340)

New in version 2.3.2 (July 31st, 2013)

  • Fixed an issue in the emergency notification mechanism introduced in previous release.

New in version 2.3.1 (July 24th, 2013)

  • Improved filter list downloads (
  • Implemented filter forward-compatibility proposal (
  • Implemented an emergency notification mechanism that can be used to communicate important issues.

New in version 2.3 (July 10th, 2013)

  • Removed typo correction feature
  • Better localization approach
  • Worked around a Firefox Mobile bug, selecting filter subscription is possible again
  • Fixed issue reporter breakage in current Firefox nightlies

New in version 2.2.4 (May 9th, 2013)

  • Fixed: Server names with a trailing dot were mistakenly treated as typos.
  • Fixed a Firefox 22 compatibility issue (no colors/imaages in filters list and list of blockable items).

New in version 2.2.3 (February 14th, 2013)

  • This release mostly works around breakage caused by AVG Security Toolbar 14.0.3.* extension, it prevented Adblock Plus from working correctly among other things.

New in version 2.2.2 (January 31st, 2013)

  • Worked around regression in Firefox 18 causing entries on the blockable items list to disappear and preventing context menu from working reliably.
  • Issue reporter now encourages users to enter an email address when submitting issue reports.
  • Removed Do-Not-Track handling which is redundant with Firefox supporting it as well (blog post).
  • Added support for per-window private browsing in Firefox 20.
  • Fixed: Changes in Firefox 19 broke issue reporter.
  • Fixed: "null" access keys show up in Firefox 20.
  • Fixed: Context menu broken on background images in Firefox 20.

New in version 2.2.1 (November 23rd, 2012)

  • Fixed issue affecting loading of filters in old Firefox version (including Firefox 10).
  • Fixed wrong apostrophe encoding in translations (especially Italian).

New in version 2.2 (November 22nd, 2012)

  • New typo correction feature helps avoid landing on malicious web pages (not enabled by default) - see
  • Code license change: GNU General Public License version 3.0 instead of Mozilla Public License version 2.0
  • Minor fixes

New in version 2.1.2 (July 25th, 2012)

  • Some startup performance and memory use improvements

New in version 2.1.1 (July 4th, 2012)

  • Improved startup performance.
  • Filter preferences: improved display in right-to-left locales.
  • Fixed: Adblock Plus might break extensions like IE Tab using NPAPI plugins.
  • Fixed: Filter subscriptions are no longer being updated automatically.
  • Fixed: Firefox Sync support isn't working.

New in version 2.1 (June 29th, 2012)

  • Adblock Plus can be installed without restarting the browser now.
  • Added support for Firefox Mobile 14.
  • Improved Thunderbird integration.
  • Updated for upcoming Firefox releases (especially Firefox 15).

New in version 2.0.3 (January 5th, 2012)

  • Added a way to disable automatic filter subscription updates by means of a hidden preference.
  • Fixed: Blocking from context menu sometimes doesn't work if the context menu has a submenu.
  • Fixed: Tabs on Flash and Java sometimes disappear before they can be clicked.
  • Filter Preferences: Fixed the default width of the "Enabled" column.
  • Blockable items: Fixed "Disable filter on site" feature.

New in version 2.0.2 (December 27th, 2011)

  • Improved texts describing "non-intrusive ads" feature.
  • Made toolbar icon properly customizable in Thunderbird.
  • Fixed: Filter editing is broken in Firefox 3.6.
  • Firefox Mobile: Fixed user interface to handle "non-intrusive ads" feature properly.

New in version 2.0.1 (December 15th, 2011)

  • Experimental pop-up blocking support for the cases where the built-in pop-up blocker fails.
  • New Filter Preferences dialog makes managing filters and subscriptions
  • Custom filters can be organized into any number of filter groups.
  • Backup and Restore functionality allows creating a copy of all filter preferences, not just custom filters.
  • Added “Allow non-intrusive advertising” setting (can be changed in Filter Preferences, see

New in version 1.3.10 (September 28th, 2011)

  • Added Latvian and Albanian translations.
  • Fixed some minor issues.
  • Some users will be asked to complete a survey about Adblock Plus.

New in version 1.3.9 (July 4th, 2011)

  • Added experimental support for Firefox Sync
  • New extension icons
  • Updated for changes in Thunderbird 5
  • Various minor fixes

New in version 1.3.8 (May 24th, 2011)

  • Fixed: Corruption in Adblock Plus data files might result in Adblock Plus being unable to block anything
  • Fixed some minor SeaMonkey 2.1 issues
  • Some minor improvements to the issue reporter

New in version 1.3.7 (May 16th, 2011)

  • Added Brasilian Portuguese translation again
  • Slightly improved performance
  • Fixed a potential memory leak (only occurring under rare conditions)
  • Various minor fixes

New in version 1.3.6 (April 7th, 2011)

  • "Recommend us on Facebook" button can now be easily hidden (click the cross next to it).
  • New translations: Esperanto, Upper Sorbian
  • Improved display of web addresses in Adblock Plus user interface for right-to-left languages (Hebrew, Arabic).
  • Various stability improvements

New in version 1.3.5 (March 27th, 2011)

  • Added support for Firefox Mobile 4
  • Added support for Do Not Track proposal
  • Special icon state for "whitelisted" webpages removed
  • Various performance improvements

New in version 1.3.3 (December 27th, 2010)

  • Fixed Adblock Plus 1.3.2 regression: Subscription downloads fail with some proxy servers

New in version 1.2.2 (August 18th, 2010)

  • Updates to support Firefox 4 nightly builds and Firefox 4 Beta 3
  • Subscription dialog: Made "Add a different subscription" button less prominent
  • Subscription dialog: Fixed bad Chinese translation for the "Add a different subscription" button

New in version 1.2.1 (July 10th, 2010)

  • Updates to support Firefox 4 nightly builds and upcoming Firefox 4 Beta 2
  • Preferences: more reliable formatting of dates
  • Fixed: Tabs on Flash and Java display badly on some webpages
  • Fixed: Comments would sometimes be interpreted as element hiding rules

New in version 1.2 (April 30th, 2010)

  • Fixed regression: filter hits were counted in private browsing mode
  • Fennec fix: subscription page no longer showing on each update

New in version 1.1.3 (January 7th, 2010)

  • Fixed regression: filter hits were counted in private browsing mode
  • Fennec fix: subscription page no longer showing on each update

New in version 1.1.2 (December 13th, 2009)

  • Minimal Fennec 1.0 support (at least Beta 6 required)
  • Made subscription downloads support load balancing, downloads can be distributed to several servers now
  • Subscription downloads no longer fail if network.http.redirection-limit preference is misconfigured
  • List of filter subscriptions no longer offered only on first installation, also offered on update if the user has neither filter subscriptions nor own filters
  • Improved recognition of document source for $domain option in the filters

New in version 1.1.1 (August 13th, 2009)

  • Added ChinaList as recommended filter subscription.
  • Fixed: Very bad performance on some webpages.
  • Made sure that collapsing of blocked elements works reliably again and that Image Toolbar extension doesn’t disable this feature (bug 21278)
  • Made Adblock Plus initialization more bulletproof, it can no longer be disrupted by other extensions like FoxyProxy or Sxipper (forum topic).
  • Worked around a bug in .NET Framework Assistant causing Adblock Plus user interface to break (forum topic).
  • Fixed: “Apply” button doesn’t enable in Preferences if a filter subscription is moved with the mouse (bug 21337).
  • Fixed: List of blockable items occasionally misses out some items if it is open while page is loading.
  • Fixed: Error shows up in Error Console if Adblock Plus needs to process certain types of addresses (forum topic).

New in version 1.1 (July 13th, 2009)

  • Known issues:
  • Thunderbird: When clicking “Subscribe” in the subscription list on first run, the entire Thunderbird window is closed. This should be fixed in Thunderbird soon (bug 503299).
  • SeaMonkey: Toolbar icon looks ugly with the Modern theme. Modern theme doesn’t seem to consider the possibility of extensions, using it with Adblock Plus isn’t recommended.
  • Some translations contain untranslated English strings.
  • New features:
  • Added handling of HTTP redirects, the redirect address now shows up in the list of blockable items as well as the original address, both can be blocked.
  • Added support for flexible anchors at start of filter (forum topic).
  • Added support for ^ character that will match a single separator character or end of address (forum topic).
  • Added support for domain exceptions in element hiding analogous to the $domain option of regular filters, e.g. “,” or “” (forum topic).
  • User interface:
  • “Block” button on plug-ins (e.g. Flash or Java) is no longer shown permanently, it only shows up when the mouse is on the plug-in area.
  • Added “Re-enable Adblock Plus on this page” context menu item for pages where Adblock Plus is disabled, this removes/disables the filter responsible.
  • Browser integration code runs in its own context now, this makes conflicts with other extensions less likely.
  • Changed the way “add subscription” links work, these can now only be triggered by user clicking a link.
  • Added diagnostic page displaying all errors related to Adblock Plus as well as Adblock Plus version/source code revision, can be opened by typing chrome://adblockplus/content/errors.html into the location bar.
  • Fixed: ABP icon updates its status every two seconds, hogs CPU time.
  • Fixed: Detection of background images breaks the context menu.
  • Fixed: “Disable on …” doesn’t work correctly if the exception rule already exists but is disabled.
  • Fixed: “Disable on …” doesn’t work correctly with rules that already exist in filter subscriptions rather than user-defined filters.
  • Fixed: Input focus issues when closing list of blockable items in current Firefox nightly builds.
  • List of blockable items:
  • Added “document source” column, hidden by default (domain name to be used for the $domain filter option, forum topic).
  • Added “Disable this filter on” context menu item for user-defined filters (adds $domain option as required).
  • Fixed: Creating a filter for an item matching a disabled exception rule wasn’t possible again (forum topic).
  • Preferences window:
  • “Slow filter” warning is now a separate list column which can be used for sorting.
  • Using browser’s real find bar now instead of faking it.
  • “Close” button moved to the right side of the filter editor, made the button use Firefox 3 look.
  • Improved position calculations for the filter editor, no longer makes the text position change.
  • Fixed: Enabling/disabling many element hiding rules at once is slow.
  • When a list of filters is pasted or imported, always insert comments before the filter that follows them (forum topic, forum topic).
  • Fixed: Adding a filter subscription that redirects to a different address causes download failure.
  • Fixed: Same filter might appear twice in the list in a particular scenario.
  • Fixed: Wrong row is selected when the window is opened (worked around bug 489881).
  • Filter composer:
  • Added flexible anchors as an option – “at the beginning of domain name” (forum topic).
  • Added “^” as fourth suggestion, block the entire domain (forum topic).
  • Added warning when adding a filter to a disabled filter group (forum topic).
  • Application support:
  • Dropped compatibility with old application versions and cleaned up code, now requiring at least: Firefox 3.0.9, SeaMonkey 2.0b1, Thunderbird 3.0b3, Songbird 1.2, Prism 1.0b1.
  • Moved almost all application-specific code to the overlay file corresponding with that application, this should make application-specific changes easier in future.
  • Fixed: Toolbar icon cannot be moved to a different location (SeaMonkey).
  • Fixed: Toolbar icon might be added in one window but not another on first start (SeaMonkey and Thunderbird).
  • Fixed: Indentation of some menu items of the toolbar icon’s menu too large (Songbird).
  • Fixed: Adblock Plus initialization fails (Prism).
  • Core:
  • Added explicit support for blocking fonts (@font-type CSS directive in Firefox 3.5).
  • Clearing browsing history in Firefox now clears hit statistics in Adblock Plus as well (this can be disabled with the hidden extensions.adblockplus.clearStatsOnHistoryPurge preference, forum topic).
  • Cleaned up data management code, made sure Adblock Plus doesn’t use up more memory than necessary.
  • Fixed: Webpages can easily detect “Collapse blocked elements” option.
  • Fixed: An error is reported to console on first run (patterns.ini not found).
  • Fixed: Domain-restricted filters were applied to pages opened from disk.

New in version 1.0.2 (April 16th, 2009)

  • New translation: Serbian
  • Element hiding works in Firefox 3.0.9 and higher again (forum topic, broken by fix for bug 416942)
  • Regular expressions with $domain options are recognized correctly
  • Blockable items: when copying addresses or filters to clipboard platform’s linebreaks are used as separator (previously: Unix linebreaks)
  • Preferences: using more compact date formatting for last hit column and last download of subscription

New in version 1.0.1 (January 10th, 2009)

  • New translations: Icelandic, Kazakh
  • List of recommended filter subscriptions extended and made scrollable again
  • Start-up performance improvements by Nickolay Ponomarev (bug 20410, bug 20411, bug 20412)
  • Added a possibility to restrict filters to some domains with the $| option (documentation, forum topic)
  • Blockable items: Matching disabled filters now displayed — for easier re-enabling (forum topic)
  • Blockable items: New state icon for items matching disabled filters
  • Blockable items: Clicking in the State column now disables/re-enables the filter
  • Blockable items: Opening in new tab works properly in Songbird now
  • Blockable items: Searching for filter text now possible as well
  • Filter composer: extensions.adblockplus.composer_default preference now decides which suggestion should be selected by default (forum topic)
  • Filter composer: Added “Select all” and “Select none” for type checkboxes (forum topic)
  • Preferences: “Tip of the day” replaced by “Getting started” in Help menu
  • Toolbar button now has a context menu (same as dropdown menu)
  • Added support for item type “media” (will be added in Firefox 3.1 for HTML audio/video tags)
  • Format version is now being saved to patterns.ini
  • Regression fixed: Frames are not collapsed in some situations (forum topic)
  • Fixed: Toolbar button shouldn’t have the same title as the Tools menu item
  • Fixed: Element hiding might change page layout even on whitelisted sites (forum topic, issue still exists in Firefox 2.0)
  • Fixed: Filter list in Preferences sometimes won’t update properly if filters are added/removed (forum topic)
  • Fixed: Removed filters still apply if two different filters were translated into same regular expression
  • Fixed: Filters like “[Foo]” mess up filter storage file
  • Fixed: Filter list import doesn’t remove checksum comment
  • Object tabs no longer shown for invisible objects
  • Changed placement of object tabs in document to avoid breaking some sites (forum topic)
  • K-Meleon: Fixed handling of some menu items in toolbar icon’s menu
  • Fixed: Element hiding doesn’t work for chrome documents (Firefox 2.0/Thunderbird 2.0 only, forum topic)
  • Fixed: $collapse flag not being read correctly from patterns.ini
  • Fixed: Toolbar button shouldn’t have a drop-down arrow if extensions.adblockplus.defaulttoolbaraction preference is 0

New in version 1.0 (December 2nd, 2008)

  • Known issues:
  • Format of the filter storage changed so going back to a previous version requires exporting the filters and re-importing them after the downgrade
  • Mac OS X: Flash movies might not be displayed properly if “Show tabs on Flash and Java” option is switched on
  • Some translations contain untranslated English strings
  • New features:
  • New filter composer dialog makes adding filters easier
  • New filter options $third-party and $~third-party restrict filters to third-party/first-party requests (forum topic)
  • User interface:
  • Added translations: Armenian, Galician, Indonesian
  • List of blockable items:
  • Tooltip now shows the filter source in addition to the filter itself (forum topic)
  • Filters can now be disabled and re-enabled from the context menu (forum topic)
  • Changed default action for blocked items to “Add exception rule” instead of “Edit filter”
  • Made “State” the default sort order (blocked items first)
  • Added support for multiple selection and copying of multiple addresses/filters (forum topic)
  • Added “Select all” to the context menu
  • Added “Copy filter” item to the context menu (forum topic)
  • Added “Size” column (hidden by default), same information shown in the tooltip
  • Changed filter color for element hiding hits (forum topic)
  • Fixed: Header is hidden in full screen mode
  • Preferences window:
  • Eliminated delay when window is opened and much of the delay when changes are applied
  • Mac OS X: Preferences menu changed into toolbar to make sure it stays inside the window (forum topic)
  • Changed names for groups of user-defined filters (forum topic)
  • Group/subscription titles use bold text now (forum topic)
  • Added “View” menu to control visible columns and sorting, removed column picker
  • Made new “View” menu the context menu for list header
  • Groups containing user-defined filters can now be disabled (forum topic)
  • Images for “Enabled” column made more obvious (forum topic, forum topic)
  • Removed “Add filter” dummy from the list (forum topic)
  • Added support for comments in all filter groups, not only “Advertisement filters”
  • Comments now always stay before the same filter, regardless of sorting (also, they can be dragged even if the list is sorted)
  • For invalid filters, tooltip now explains why they are invalid
  • Removed user interface elements that were made obsolete by the filter composer: regular expression warning and corresponding preference extensions.adblockplus.warnregexp, dropdown list in filter editor (forum topic)
  • Filter export now inserts a checksum comment into the file (forum topic)
  • Added a tooltip explaining the meaning of the exclamation mark
  • Added a way to disable/enable filters and subscriptions from context menu
  • “Reset filter statistics” now resets “Last hit” as well (bug 18650)
  • Fixed: Findbar in preferences dialog has no icons (Firefox 3)
  • Fixed: Dates would sometimes use wrong character encoding (bug 441370)
  • Fixed: “Edit filter in effect” might select a filter in a disabled subscription even though it exists in enabled subscriptions as well (forum topic)
  • Fixed: Clicking twice on the Enabled column starts filter editor
  • Fixed: Changes to “download automatically” status are not displayed immediately
  • Pasting filters with spaces (in particular comments) now possible (bug 18920)
  • Filter subscription selection:
  • First start: Filter subscription selection is opened in a new tab rather than in a separate window (bug 15786)
  • First start: Filter subscription selection will show up even if other extensions already added a filter subscription they maintain.
  • “Add filter subscription” from Preferences brings up filter subscription selection rather than the dialog for custom filter subscriptions.
  • Added warning if Filterset.G is installed with option to uninstall automatically
  • Added Adblock warning with option to uninstall automatically (this was a separate question pop-up before)
  • Other user interface changes:
  • Regular expression warning was extended to also warn for filters that are too short to be optimized
  • Warning that Adblock Plus is disabled allows re-enabling with a single click
  • Removed ancient Drag&Drop handling code (not discoverable and not advertised anywhere)
  • Fixed: “Disable on this page only” won’t work for pages with query string
  • About Adblock Plus: Made version number selectable so that it can be copied
  • About Adblock Plus: Made homepage link localizable (and different for German/French locales, bug 17136)
  • Added “Adblock Plus: Blockable Items” to the View menu in Firefox (View – Toolbars menu in SeaMonkey)
  • Core:
  • Core code was redesigned for better maintainability, code documentation and automated tests (based on Mochitest) were added for large parts of the core
  • Made sure filter storage file isn’t overwritten unless write was successful (bug 16488)
  • Improved performance (esp. reading filter from disk and saving filters for large filter lists), reduced the amount of memory used
  • Fixed: Exception rules don’t always apply to element hiding in Firefox 3 (bug 20034)
  • Firefox 1.5, Thunderbird 1.5, SeaMonkey 1.0, Songbird 0.5/0.6 are no longer supported (removed some backwards compatibility hacks)
  • Flock 1.2/2.0 and Songbird 0.7/1.0 are supported now
  • Added support for Prism 0.9 (forum topic)
  • Added hidden preference extensions.adblockplus.savestats to allow turning off hit statistics (useful if patterns.ini is put into a version control system) (bug 18650)
  • Added support for private browsing mode in Firefox 3.1, hit statistics are disabled automatically
  • All first run actions are now controlled by extensions.adblockplus.currentversion preference (replaces showsubscriptions, checkedtoolbar, checkedadblockinstalled preferences)
  • Changed patterns.ini format to allow user-defined comments (and potentially other filters as well) to be stored in any filter group
  • Adblock Plus 0.6 preferences are no longer imported on upgrade
  • Adblock preferences are no longer imported on upgrade (filter list still imported)
  • Fixed: Object tabs show up on print (bug 19405)
  • Fixed: “getBoxObjectFor() is deprecated” warning in error console (bug 19126)
  • Subscription downloads:
  • For subscription downloads, a comment “! Checksum: abcd” is now interpreted and files with wrong checksum are rejected to prevent broken downloads (forum topic, reference implementation to add checksums)
  • Next attempt after failed download is after one day now rather than after one hour to prevent server overload (adjusted preference extensions.adblockplus.subscriptions_fallbackerrors accordingly)
  • Fallback request can now disable automatic downloads for subscriptions that are no longer available
  • Fixed: Subscription downloads sometimes go to browser cache