See release notes.

Closed as fixed:

• Open tabs can be closed when opening a webpage from about:newtab
• Use ISO8061 dates in user filter comments
• Support new Chromium based Edge in pre-parsing directives
• Do not triggers strict blocking for wildcard-only patterns
• Improve/refine syntax highlighter, specifically:
  
  • Fix properly reporting invalid filter options
    
  • Add syntax highlighting/auto-completion for preparsing directives
    
  • Add CoreMirror's code-folding ability to list editor/viewer
    
• Reverse lookup fails for filter of type example.com##*
• New filter parser creates unexpected network filter from malformed cosmetic filter
• Avoid loading "!#include" filepaths that are wrapped into "!#if" tags that exclude the browser's environment
• Use "Trusted sites" instead of "Whitelist"
• Element picker suggests unhelpful network rule
• Logger shows names of scriptlet as different ones if short-hand is used
• A problem with cyrillic characters
• Adding csp to logger's filter expression picker
• Cosmetic filters in about:blank iframe
• Adguard French filter
• Can't use set-constant.js multiple times for same parent property

Notable commits with no entry in issue tracker:

• Remove experimental click-to-load disqus scriptlets
• Improve annotations for search operations in CodeMirror editor
• Consolidate filter list reverse lookup code into a single file
• Allow :upward() operator to select html element
• Instantiate procedural filterer instance on demand only
• Deprecate pseudo user styles code
• Mind discarded status of tabs when internally handling them
• Do not let grow subframe dictionary grow unbound
• Consider an empty pattern with anchors to be dubious
• Add static filter parser checklist
• Fix highligthing of FQDN match in logger
• Add support to compare delay against literal Number.NaN in nossif/nostif

Commits history since 1.28.4.

See release notes.

Closed as fixed:

• Add cdn.jsdelivr.net mirror for urlhaus blocklist
• Remove repo.or.cz from list of CDNs for urlhaus blocklist
• Fix spurious rejection of some AdGuard redirect filters
• Fix the reporting of invalid static extended filters in the logger
• Fix improper rejecting fitlers with $all,~document options

Commits history since 1.28.2.

See release notes.

Changes:

Both stock malware domain lists, which are enabled by default in uBO, have been replaced by URLhaus Malicious URL blocklist, which is now enabled by default in uBO.

For existing installations, both removed malware lists will be moved to the Custom section if you still have them enabled. It is recommended you remove these lists from your Custom lists -- only you can do this, uBO does not remove lists which are currently enabled. It may take a few days before you are updated with the new default stock lists.

Closed as fixed:

• Remove Malware Domain List
  
  • Remove Malware domains
    
  • Remove Malware Domain List
    

Commits history since 1.28.0.

See release notes.

Changes:

##script:inject(...), which has been deprecated in favor of ##+js(...) for more than two years, is no longer supported.

It's no longer possible to point-and-click to create allow (green) rules from within the popup panel by default. This change is motivated by seeing way too many cases of improper usage of dynamic filtering in which users are creating allow (green) rules where noop (gray) rules should have been used. You can get back temporarily the ability to create allow rules from within the popup panel by tapping twice the Ctrl key.

Improved syntax highlighting of static filters in "My filters" and asset viewer. Additionally, in "My filters":

• Ability to toggle commenting out of filter(s) by pressing the Tab key
• Auto-completion using Ctrl-Space, this works for:
  
  • Static filter options
    
  • Resource names for redirect= option
    
  • Procedural operators for cosmetic/HTML filters
    
  • Scriptlet names for ##+js filters
    

Closed as fixed:

• Cookie-remover.js does not remove a cookie
• A possibility of using default system fonts for uBlock Origin?
• Some RegExp filters are not parsed properly
• Add support for entity-matching in domain= filter option

Notable commits with no entry in issue tracker:

• Fix edge case involving filter with a single wildcard
• Add support for wildcard/array in json-prune
• Fix matching of filters with trailing ^|
• Make the creation of allow rules in panel an opt-in feature
• Add ability to lock firewall height to basic pane height
• Fix uselessly allocating one extra WASM page
• Replace FilterPlainHostname with composite filter

Commits history since 1.27.10.

See release notes.

Closed as fixed:

• Soft hyphens in language files

Commits history since 1.27.8.

See release notes.

Changes

This release contains only updates to translated strings; especially, malicious translations were found and removed from Malay language.

Commits history since 1.27.6.

See release notes.

Notable commits with no entry in issue tracker:

• [regression] Fix computing the path of nested lists
• Ensure either `.desktop` or `.mobile` class is set

Commits history since 1.27.4.

See release notes.

Notes:

The new popup panel UI has been further fine-tuned as per (constructive) feedback at https://github.com/uBlockOrigin/uBlock-issues/issues/1027.

Changes:

• Add Armenian locale

Notable commits with no entry in issue tracker:

• More fine tuning of desktop panel as per feedback
• Even more fine tuning of UI as per feedback
• More fine tuning of new UI as per feedback
• Minor fine tuning of CSS in new popup panel
• Restore ability to set popup panel font size in advanced settings

Commits history since 1.27.2.

See release notes.

Closed as fixed:

• Popup window does not have a scroll bar in the connected hosts list
• The include directive does not work when loading local assets
• New popup power button is not properly centered

Notable commits with no entry in issue tracker:

• Minor fine tuning new panel
• Increase min-width of #main pane in popup panel

Commits history since 1.27.0.

See release notes.

Changes

The popup panel and dashboard have been redesigned to be more user friendly, including more mobile-friendly. The re-design is being done by taking into account @brampitoyo's suggestions and feedback.

You can revert to the old popup panel by setting uiFlavor to classic in advanced settings -- though keep in mind the old panel is not likely to be kept around forever.

Closed as fixed:

• min-height glitch uBO element picker
• requestAnimationFrame-if and prefixed parameter
• Drop hot key customization options
  
  • Firefox 74 and above supports the removal of assigned shortcuts
• Add new filtering category to the logger: popups
• Nano Adblocker cannot view EasyList China + EasyList
• Race condition at browser launch may prevent application of cosmetic filters

Notable commits with no entry in issue tracker:

• Add new scriptlet to allow blocking Amazon's apstag.js
• Add ability to open the dashboard with a keyboard shortcut
• Support fetching assets from CDNs when auto-updating
• First pass to re-design the dashboard
• Second pass to re-design the dashboard
• Third pass to re-design the dashboard
• Fourth pass to re-design the dashboard
• Fifth pass to re-design the dashboard
• Sixth pass to re-design the dashboard

Commits history since 1.26.2.

See release notes.

No code change since 1.26.0.

The sole purpose of this release is to ensure an up to date version of EasyList is shipped as part of the package.

An obsolete version of EasyList was shipped with uBO 1.26.0 and this was causing Google fonts to be unduly blocked everywhere after installing uBO for the first time.

Though forcing an update of filter lists would solve the issue, Google fonts should not be blocked out of the box without having to force an update of filter lists.

Commits history since 1.26.0.

See release notes.

Closed as fixed:

• Remove Adblock Warning Removal
• Add a way to blanket-except blocked cname-based requests
• uBO icon in Manage Your Extensions disappears in the offline mode
• Add remove-class scriptlet
• Picker-window doesn't appear if images on a site is chosen
• uBlock Origin v1.25.0 new feature cause DNS leaks
• Ability to remove DOM element instead of hiding?

Notable commits with no entry in issue tracker:

• Use prime number to generate cache-bypass token
• Allow empty needle in BidiTrieContainer.lastIndexOf()
• Reorganize filter instances deduplication code
• Add filter instance deduplicater in static net filtering engine
• Add support for cname type and denyallow option
• Support line continuation in filter lists
• Improve window.open-defuser scriptlet
• Improve validation of CSS selector-based cosmetic filters
• Add procedural cosmetic operators remove() and upward()
• Improve set-constant.js scriptlet

Commits history since 1.25.2.

See release notes.

Closed as fixed:

• In Element Zapper, support Mac keyboards’ Delete key (pull request from @roryokane)
• Uncaught (in promise) ReferenceError: WebAssembly is not defined
• Accessing localStorage delays startup
• Need to whitelist Microsoft Edge internal page

Notable commits with no entry in issue tracker:

• Allow re-entrance in abort-current-inline-script
• Make element picker mind that network filters are case-insensitive
• Support loading of benchmark dataset in published versions
• Wrap long hostnames in popup panel

Commits history since 1.25.0.

See release notes.

Changes:

uBO requires a new permission, dns, which is required to solve issue 780. This may triggers a new permission warning from Firefox when uBO updates to the latest dev build, specifically "Access IP address and hostname information", even though this was already possible for uBO to access that information.

From now on uBO will CNAME-uncloak network requests. CNAME-uncloaked network requests will appear as blue entries in the popup panel and the logger. The uncloaked entries in the popup panel will also show the related aliases (in smaller characters underneath the canonical names).

Network requests which were blocked, redirected, or excepted by a filter/rule are not uncloaked. Canonical hostnames which are first party to the associated alias hostname are not fed back into uBO's filtering engine.

Warning: CNAME-aliased hostnames exist most likely for content delivery purpose, i.e. legitimate.

Closed as fixed:

• Reverse lookup of filter fails with wildcard-leading patterns
• Search Bar is partially hidden on list pages
• "0" prefixes are currently not accepted as valid hosts entries
• [Regression] Show requests blocked in the logger as a result of csp= option
• Source list of entity filter with subdomain is not looked up correctly
• Fanboy's Cookie List moved to better place
• Cosmetic filtering issue with Shadow DOM/tree/root
• "::" entry in notracking hosts file blocks URLs containing "::"
• Adsbygoogle.js injectable does not validate whether iframe going to be injected is already exist or not
• Allow clicking on domain to expand it to show hosts

Notable commits with no entry in issue tracker:

• New way to convey IDN and CNAME info in popup panel
• Harden abort-current-inline-script scriplet
• Remove "uBlock filters -- Experimental" from stock lists
• Fix unescaped attr value in generated CSS selector
• Fix regex-like filter representation in logger
• Improve neutered Google Analytics replacement scriptlet

Commits history since 1.24.4.

## Fixed

- Fix token position value when removing leading wildcard

See release notes.

This is an emergency fix:

• Fix token array being too small for very long URL

Commits history since 1.24.0.

See release notes.

Changes:

The badge for the cosmetic filtering switch in the popup panel has been revisited so that it will from now on be evaluated on-demand only, which occurs when hovering the mouse cursor over the cosmetic filtering switch.

Closed as fixed:

• report-uri / report-to rejector RegExp is broken
• global onMouseDown handler doesn’t handle SVG links
• Regression: tabs created by user are closed by popup filter
• Switch filter inputs to type="search"
• Performance of the per-site switches counters
• Expand bidi-trie code to hold more types of filters
• Block element preview window overlays object to be blocked

Notable commits with no entry in issue tracker:

• Save magic compiled/selfie format values in cache storage
• Support keyboard shortcut to open popup panel
• Use request as its own context when none available

Commits history since 1.23.0.

See release notes.

New:

Static filter option elemhide as per ABP semantic

The elemhide option is now fully supported, rather than being an alias of generichide. The elemhide option will be internally converted into two filters, generichide and specifichide. There have been cases raised by filter list maintainers where specifichide would be useful. Additionally, the filter options elemhide, generichide and specifichide can be aliased with ehide, ghide and shide respectively. (generichide appears over 1,300 times just in "uBlock filters".)

Closed as fixed:

• Prevent uBO from being reloaded mid-session
  
  • A new advanced setting -- extensionUpdateForceReload -- can be used to override this new behavior.
• Comply with new security requirements for Chrome
  
  • The changes benefit all platforms.
• Add advanced setting to control logger popup type
• Ignoring ping filters

Commits with no entry in issue tracker:

• Fix bad returned value in case of empty URL
• Avoid or defer writing back to cache storage at launch
• Do not bypass network listener in suspended mode
• Remove stats button from logger
• Log procedural cosmetic exception filters
• Prevent reverse-lookup from finding badfilter-ed filters
• Reduce memory usage in staticExtFilteringEngine.HostnameBasedDB
• Store csp= filters into main data structure
• Add ability to quickly create exceptions in logger
• Match static popup filter against local context
• Fix erroneous reports of blocked popups in logger
• Fix case of unreported :style filters in logger
• Do not flush blocked-elements cache at webNavigation time
• Remove remnants of chrome references
• Add support for elemhide (through specifichide)
• Simplify client messaging code
• Removing now obsolete Safari code base
• Revisit element picker arguments code
• Convert new setTimeout-if scriptlet to blacklist approach
• Work toward modernizing code base: promisification
• Fix icon title always showing (0) when badge is disabled
• Reuse existing Set/Map when calling scriptletFilteringEngine.retrieve
• Fix entity-based lookup in html & scriptlet filtering
• Coalesce tab reloads in burst "relax blocking mode" ops

Commits history since 1.22.4.

See release notes.

This is an emergency fix.

The issue was fixed in dev build days ago, and it was originally deemed to not be a serious regression.

However as reported by a user on Reddit, the issue was affecting more than just the logging of cosmetic filters, it was completely breaking cosmetic filtering when the two following conditions were met:

• uBO's own logger was opened; AND
• Procedural cosmetic filters were injected on the page.

Commits history since 1.22.2.

See release notes.

Emergency fix in ac7825c789ce: redirection rules could be
ignored under some circumstances. Regression from 3e5c9e00ab36.

Commits history since 1.22.0.

See release notes.

New

Toolbar icon badge color

The toolbar icon badge color will now reflect the current blocking mode. This should help with usage of the "Relax blocking mode" shortcut. The way uBO relaxes the current blocking mode is configurable through the advanced setting blockingProfiles.

Static network filter options

redirect-rule=

This new option allows to create a pure redirect directive, without a corresponding block filter as would be the case with the redirect= option. For example, consider the following filter:

||example.com/ads.js$script,redirect=noop.js

The above filter will result in a block filter ||example.com/ads.js$script and a matching redirect directive. Now consider this following filter:

||example.com/ads.js$script,redirect-rule=noop.js

The above filter will not cause a block filter to be created, only a redirect directive will be created. Standalone redirect directives are useful when the blocking of a resource is optional but we still want the resource to be redirected should it ever be blocked by whatever mean -- whether through a separate block filter, a dynamic filtering rule, etc.

empty and mp4

Support for AdGuard's empty and mp4 filter option has been added.

!#if false ... !#endif

Support for the directive !#if false to easily disable a block of filters, which is more convenient than having to delete them all or prefix them all with !.

Scriptlet injection

Ability to wholly disable scriptlet injection for a given site using broad scriptlet injection exception:

example.com#@#+js()

It is also possible to disable scriptlet injection everywhere with a generic exception:

#@#+js()

This is useful when creating specific exception filters is inconvenient.

Closed as fixed:

• Support AdGuard's empty & mp4 static filter options
• Add ability to bypass browser cache when fetching a resource
• Extension icon doesn't revert back when the domain is removed from Whitelist tab
• Dead code in assets.js
• Popup panel closing when forcing a reload
• uBlock does not appear to honor overriding default assets.json via Chrome policy
• uBo logger show not used :style(...) filters
• Block Element doesn't appear in the context menu of a tab under specific circumstances
• Cosmetic filters containing pseudo-elements do not show results in manual/interactive selection mode

Commits with no entry in issue tracker:

• Add support for !#if false in list directive processor
• Code review fix re. max string length in bidi-trie
• Add two scriptlets: setTimeout-if and setInterval-if
• Fix badly computed output size in µBlock.base64.encode()
• Add new scriptlet to defuse calls to requestAnimationFrame
• Add support for special exception filter #@#+js()
• Add ability to escape comma in a scriptlet's list of arguments
• Review icon badge color management
• Reflect blocking mode in badge color of toolbar icon
• Invalidate browser's memory cache after using element picker
• Add virtuous signal that remote code execution in extension context is not possible

Commits history since 1.21.2

See release notes.

New:

New procedural cosmetic/HTML filtering operator: min-text-length(x), where x is the minimal text length of the subject DOM element. It is chainable. Example:

example.de##^script:has-text(.charCodeAt):min-text-length(14000)


New keyboard shortcut available: "Relax blocking mode". Use it to lower the current blocking mode to a lower one. Currently the default behavior is:

1) Allow JavaScript; or
2) Allow 3rd-party network requests

Consequently, if your default blocking profile is to disable JavaScript and 3rd-party network requests, you will need to press twice to lower uBO's blocking mode to the lowest blocking mode achievable through the keyboard command. The current web page will be automatically reloaded each time the current blocking mode is lowered.

The shortcut will have no effect when the current blocking mode in effect does not forbid JavaScript and 3rd-party requests.

Closed as fixed:

• url(...) style injections in cosmetic filters
• Parse search string as plaintext to avoid doubling \
• Commit button gets stuck under specific circumstances
• Whitelisting behind-the-scene causes uBO to disregard the moz-extension-scheme rule
• Add link to open urls in a new tab
• Thunderbird's 1.20.0 xpi contains version 1.9.15.101
• Coalesce common plain filters in a bucket into a single trie
• Temporary dynamic filters with 3p-script won't save
• Keyboard shortcut to change modes

Commits with no entry in issue tracker:

• Fix thrown exception in onHeadersReceived listener
• Prevent adding known invalid URL-based rules
• Fix background color of previewed image in logger
• Finalize converting resources.txt into immutable resources
• Save only modified immediate hidden settings
• Refactor management of injectable resources
• Strict-block only if match is anchored to end of hostname
• Minor code review re. context menu code
• Add ability to suspend network request handler at will
• Fix some element picker-related issues
• Fix merging multiple URls in element picker
• Replace exec with transpose in procedural filters
• Add test pages for procedural filters
• Add new procedural operator: :min-text-length(x)

Commits history since 1.20.2

See release notes.

No changes from 1.20.0.

This release exists only to fulfill a request by Mozilla that I submit a new version even if there is no code change, so as to test changes on the back-end of AMO.

Commits history since 1.20.0

See release notes.

Closed as fixed

• Does not block large media fetched over Fetch API
• Last permanent rule is marked as changed when rules are added to the bottom
• Dashboard open from uBO popup triggers unsaved changes dialog
• Multiple "Advanced settings" opened
• Redirection fails for filters having * in the host part
• Show requests blocked in the logger as a result of csp= option
• Element picker normalize style attrib
• "#@#+js" entries are shown in the logger as yellow instead of green
• no-scripting: behind-the-scene false sticks even after restoring uBO from a config where it's not present
• Revert button remains active/clickable after clicking on Apply changes
• "Block element" item should have ellipsis (usability)
• Nested !#if/!#endif directives not evaluated properly
• Hide predefined whitelist directives
• Non-specific procedural filters
• HTML filter showing up as cosmetic filter in logger
• No warning for unsaved changes in dashboard
• Logger: can't bring up filtering options for popup entries where URL does not start with http[s]
• Switching configuration tabs [appears to stop] list updates
• Cosmetic filter exceptions not displayed in network request logger

Commits with no entry in issue tracker

• Fix generichide not being evaluated for local context
• Discard whole filter with bad csp= content
• Add a link to the remote asset in asset viewer
• Rearrange inner loop of static network filtering engine
• Fix "Close this window" not working on document-blocked page
• Add support for all filter option
• Set default delay for creating selfie to 3 minutes
• Avoid duplicated strings in filterOrigin w/ new approach
• Revisit code to benefit from ES6 syntax
• Refactor runtime storage of specific cosmetic filters
• Add support for nth-ancestor operator in HTML filtering
• Ensure "Ignore generic cosmetic filters" sticks on Fennec

Commits history since 1.20.0

See release notes.

Fixed

• Fix regression affecting `*$csp=`-like filters

Commits history since 1.19.4.