Adblock Plus preferences

The following table lists and explains all preferences that are used by Adblock Plus. These preferences can be viewed and changed via about:config.

Preference Default value Comments
Visible options
extensions.adblockplus.correctTypos false Value of the "Correct mistyped internet addresses" options
extensions.adblockplus.enabled true Value of the "Enable Adblock Plus" option
extensions.adblockplus.fastcollapse false Reverse of the "Hide placeholders of blocked elements" option
extensions.adblockplus.frameobjects true Value of the "Show tabs on Flash and Java" option
extensions.adblockplus.savestats true Value of the "Count filter hits" option
extensions.adblockplus.showinstatusbar false Value of the "Show in status bar" option
extensions.adblockplus.whitelist {} Domains names that have been added to the typo correction whitelist
Hidden options
extensions.adblockplus.clearStatsOnHistoryPurge true If true, clearing browsing history will also clear hit statistics for Adblock Plus filters. Note that the hit statistics often allow deducing which sites the user visited, when and how often.
extensions.adblockplus.composer_default 2 Determines which suggestion should be selected in the filter composer by default:

0 — custom pattern
1 — exact address only
2 — entire directory
3 — entire site
extensions.adblockplus.data_directory adblockplus The directory where Adblock Plus should store its data. This can be either an absolute path, or it can a directory location relative to the user's profile. If patternsfile preference is set it will override the location for patterns.ini file while other files stay in this directory.
extensions.adblockplus.defaultstatusbaraction 0 Defines the action that should be executed when the status bar icon is clicked. For list of possible values see defaulttoolbaraction.
extensions.adblockplus.defaulttoolbaraction 0 Defines the action that should be executed when the toolbar icon is clicked. Possible values are:

0 — show menu
1 — open/close blockable items
2 — show Preferences dialog
3 — enable/disable Adblock Plus
anything else — do nothing
extensions.adblockplus.enable_key empty Defines the keyboard shortcut to be used to enable/disable Adblock Plus. For description of possible values see sidebar_key.

Note: This setting will only apply after the browser is restarted.
extensions.adblockplus.filters_key Accel Shift E, Accel Shift F, Accel Shift O Defines the keyboard shortcut to be used to open Filter Preferences dialog. For description of possible values see sidebar_key.

Note: This setting will only apply after the browser is restarted.
extensions.adblockplus.flash_scrolltoitem true Defines whether "Flash item's borders" in the list of blockable items should try to scroll the item into view.
extensions.adblockplus.patternsbackupinterval 24 Minimal interval between two backups of patterns.ini (in hours)
extensions.adblockplus.patternsbackups 5 Number of backups for patterns.ini that should be kept. If this is 0, backups will be disabled.
extensions.adblockplus.patternsfile empty Name of the file that should be used to store the list of filters. This can be either an absolute path, or it can be file's location relative to the user's profile.
extensions.adblockplus.previewimages true Defines whether the tooltip in the list of blockable items should show the image that the item represents.
extensions.adblockplus.sendReport_key empty Defines the keyboard shortcut to be used to send issue reports. For description of possible values see sidebar_key.

Note: This setting will only apply after the browser is restarted.
extensions.adblockplus.subscriptions_autoupdate true Defines whether filters in filter subscriptions will be updated automatically.

Note: Disabling updates is not recommended.
extensions.adblockplus.subscriptions_exceptionscheckbox true If true, the filter list for non-intrusive ads will get special treatment and will be displayed as a checkbox in the user interface.
extensions.adblockplus.synchronizationinterval 24 Minimal interval between two subsequent downloads of a subscription (in hours)
Remembered actions
extensions.adblockplus.blockableItemsSize {width: 200, height: 200} Remembered size of the Blockable Items list (width setting is only relevant when displayed as a sidebar).
extensions.adblockplus.correctTyposAsked false This is set to true after the user made a decision on the typo correction opt-in prompt.
extensions.adblockplus.currentVersion 0.0 Stores the last used Adblock Plus version, this will trigger actions that need to be done on upgrade or first install
extensions.adblockplus.detachsidebar false Stores state of the list of blockable items — true means detached
extensions.adblockplus.hideContributeButton false This is set to true if the user chose to hide the Contribute button.
extensions.adblockplus.recentReports [] JSON-encoded data on recently submitted issue reports (address of the report, website reported and time of submission)
Internal preferences (don't change unless you really know what you are doing)
extensions.adblockplus.lastRuleUpdate 0 Timestamp of the last attempt to update typo correction rules
extensions.adblockplus.report_submiturl Address on adblockplus.org to submit issue reports to.
extensions.adblockplus.subscriptions_exceptionsurl Location of the filter list used to allow non-intrusive ads.
extensions.adblockplus.subscriptions_fallbackerrors 5 Sets the required number of failed subscription download attempts before the fallback script (see subscriptions_fallbackurl) will be consulted for the new address of the subscription. Note that Adblock Plus will always retry a download one day after a failed download attempt.
extensions.adblockplus.subscriptions_fallbackurl Address of the script that should be consulted if a subscription fails to download a certain number of times (see subscriptions_fallbackerrors). %s is replaced by the address of the subscription in question. The script should print something like "301 http://example.com/new_list.txt" if the new location of the subscription is known.
extensions.adblockplus.subscriptions_listurl Address to download the complete list of filter subscriptions from.
extensions.adblockplus.whitelistschemes about chrome file irc keyword moz-safe-about news resource snews x-jsd addbook cid imap mailbox nntp pop data javascript List of URL schemes that shouldn't be blocked (applied to both whole documents and to item locations)
Removed preferences
extensions.adblockplus.blocklocalpages Unused in Adblock Plus 0.7.5 and higher
extensions.adblockplus.blocktypes Unused in Adblock Plus 0.7.5 and higher
extensions.adblockplus.checkedadblockinstalled Unused in Adblock Plus 1.0 and higher
extensions.adblockplus.checkedadblockprefs Unused in Adblock Plus 0.7.5 and higher
extensions.adblockplus.checkedadblocksync Unused in Adblock Plus 0.7.5 and higher
extensions.adblockplus.checktoolbar Unused in Adblock Plus 1.0 and higher
extensions.adblockplus.grouporder Unused in Adblock Plus 0.7.5 and higher
extensions.adblockplus.hideimagemanager Unused in Adblock Plus 2.1 and higher
extensions.adblockplus.linkcheck Unused in Adblock Plus 0.7.5.4 and higher
extensions.adblockplus.linktypes Unused in Adblock Plus 0.7.5 and higher
extensions.adblockplus.localschemes Unused in Adblock Plus 0.7.5 and higher
extensions.adblockplus.noncollapsabletypes Unused in Adblock Plus 0.7.5 and higher
extensions.adblockplus.patterns Unused in Adblock Plus 0.7.5 and higher
extensions.adblockplus.protectchrome.* Unused in Adblock Plus 1.0 and higher
extensions.adblockplus.settings_key Unused in Adblock Plus 2.0 and higher
extensions.adblockplus.showintoolbar Unused in Adblock Plus 2.0 and higher
extensions.adblockplus.showsubscriptions Unused in Adblock Plus 1.0 and higher
extensions.adblockplus.synchronizationinterval Unused in Adblock Plus 2.0 and higher
extensions.adblockplus.warnregexp Unused in Adblock Plus 1.0 and higher