1.48.0

Commits to master since this release
Commits since last release

To install the stable build:

• Firefox: Click uBlock0_1.48.0.firefox.signed.xpi
  • uBO works best on Firefox.
• Chromium: Install from the Chrome store (CWS): https://chrome.google.com/webstore/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm
• Edge: Install from Microsoft Store: https://microsoftedge.microsoft.com/addons/detail/odfafepnkmbhccpbejgmiehpchacaeak
  • The Microsoft Store version of uBO is published by Nicole Rolls
• Opera: Install from Opera addons: https://addons.opera.com/en/extensions/details/ublock/

---

New

Readiness status at browser launch

uBO's readiness at browser launch time is a particularly prickly issue on Chromium-based browsers,^[1] especially more so since Chromium 110. This leads to numerous reports of "uBlock stopped working", which are simply caused by the fact that at launch time the browser started to load webpages before uBO was ready to filter properly (because the filter lists were not fully loaded in memory).

To reduce the number of reports caused by this issue which is outside of uBO's control, uBO's toolbar icon will now reflect its readiness status at browser launch (i.e. make visible to users what has always been happening):

1. A yellowish toolbar icon means that uBO is currently loading all filter lists into memory and as such is not ready to filter properly:
   

2. If additionally there is a yellowish ! badge while uBO is working toward readiness, this means network requests were fired by the browser which could not be processed by uBO, potentially leading to ads/trackers/etc. not being filtered in some of the already opened webpages:
   

3. Once uBO is ready to filter properly, a yellowish ! badge on a normally colored toolbar icon means that the current webpage was not filtered properly at browser launch, potentially causing the current webpage to be afflicted by ads/trackers/etc.:
   

4. To remediate the browser launch filtering issue on a given webpage, you can simply force a reload of that webpage, which as a result will bring back the badge to be rendered as expected:
   

For Chromium-based browsers, it is possible to automate step 4 above by checking the setting Suspend network activity until all filter lists are loaded in Filter lists pane in the dashboard. Caveat: in the past some users have reported this negatively interfered with page loading at browser launch time in some cases (example, example), hence why it is optional and not enabled by default in Chromium-based browsers.

With Firefox-based browsers, you should typically only see step 1 and 4 above, unless you disabled the setting Suspend network activity until all filter lists are loaded, which is enabled by default in Firefox.

_{[1] See uBlock Origin works best on Firefox / Browser launch}

Code viewer

Investigating filter issues can be a serious time sink, and to help with this, a code viewer has been added to uBO. The code viewer will automatically beautify HTML/CSS/JS code, which should be an improvement over the browser built-in view-source tool.

You can view beautified source code of HTML/CSS/JS resources when clicking the link in a logger entry. Additionally, if the advanced setting filterAuthorMode is set to true, an entry labelled View source code... will be added to the context menu, so that you can view the source code of any page/resource without having to open the logger.

Fixes / changes

• Fix broken http header filtering
• Prevent dashboard from loading at browser launch until ready
• Support removing whole lines of text with regex in m3u-prune scriptlet
• Fix broken filter parsing when prepended with spaces
• Context of about:blank is that of parent frame (popup option)
• Add experimental href-sanitizer scriptlet
• Prevent dialog box from overflowing logger's viewport
• Make parser take into account filterOnHeaders setting
• Show a distinct toolbar icon until filtering engines are fully initialized
• Add source code viewer

1.47.4

Commits to master since this release
Commits since last release

To install the stable build:

• Firefox: Click uBlock0_1.47.4.firefox.signed.xpi
  • uBO works best on Firefox.
• Chromium: Install from the Chrome store (CWS): https://chrome.google.com/webstore/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm
• Edge: Install from Microsoft Store: https://microsoftedge.microsoft.com/addons/detail/odfafepnkmbhccpbejgmiehpchacaeak
  • The Microsoft Store version of uBO is published by Nicole Rolls
• Opera: Install from Opera addons: https://addons.opera.com/en/extensions/details/ublock/

---

Fixes / changes

• Add list for Macedonia; add languages to Persian list
• Support update period below 1-day
• Restore behind-the-scene origin for docless secondary resources
• Refine AST template's regex for hosts file entries
• Flush cached result when adding to FilterDomainHitSet

1.47.2

Commits to master since this release
Commits since last release

To install the stable build:

• Firefox: Click uBlock0_1.47.2.firefox.signed.xpi
  • uBO works best on Firefox.
• Chromium: Install from the Chrome store (CWS): https://chrome.google.com/webstore/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm
• Edge: Install from Microsoft Store: https://microsoftedge.microsoft.com/addons/detail/odfafepnkmbhccpbejgmiehpchacaeak
  • The Microsoft Store version of uBO is published by Nicole Rolls
• Opera: Install from Opera addons: https://addons.opera.com/en/extensions/details/ublock/

---

Fixes / changes

• Support moving logger dialog around with touch events
• Raise minimum version of Firefox
• Fix improper invalidation of inline-(font|script) types

1.47.0

Commits to master since this release
Commits since last release

To install the stable build:

• Firefox: Click uBlock0_1.47.0.firefox.signed.xpi
  • uBO works best on Firefox.
• Chromium: Install from the Chrome store (CWS): https://chrome.google.com/webstore/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm
• Edge: Install from Microsoft Store: https://microsoftedge.microsoft.com/addons/detail/odfafepnkmbhccpbejgmiehpchacaeak
  • The Microsoft Store version of uBO is published by Nicole Rolls
• Opera: Install from Opera addons: https://addons.opera.com/en/extensions/details/ublock/

---

Fixes / changes

• Prevent context menu entries on non-HTTP documents
• Ignore compilation hints when applying exception cosmetic filters
• Add support for regex-based values as target domain for static extended filters
• Add support for regex-based values for domain=/from=/to= options
• Rewrite static filtering parser
• uBO doesn't reject cosmetic filters with invalid pseudo-classes/pseudo-elements
• Make the logger entry dialog modeless
• Fix missing regex flags
• Import version 1.2.0 of RegexAnalyzer
• Set charset to utf-8 for Blob-based injected scriptlets
• Disallow -abp-... filters if not using #?#
• Work related to keyboard shortcuts for page reload
• New network filter option: to=[list of domain names]
• New network filter option: method=...

1.46.0

Commits to master since this release
Commits since last release

To install the stable build:

• Firefox: Click uBlock0_1.46.0.firefox.signed.xpi
  • uBO works best on Firefox.
• Chromium: Install from the Chrome store (CWS): https://chrome.google.com/webstore/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm
• Edge: Install from Microsoft Store: https://microsoftedge.microsoft.com/addons/detail/odfafepnkmbhccpbejgmiehpchacaeak
  • The Microsoft Store version of uBO is published by Nicole Rolls
• Opera: Install from Opera addons: https://addons.opera.com/en/extensions/details/ublock/

---

Fixes

• Add options stub to nofab scriptlet
• Rewrite logger's "exceptor" feature
• Be sure procedural filterer is present before use
• Use Blob URLs to reliably inject scriptlets -- as suggested by @evilpie
• Add :remove-attr() and :remove-class() pseudo selector operators
• Rework generic cosmetic filtering code
• Add pseudo-operator :matches-attr()
• Detect invalid usage of combinators in :not() pseudoclass
• Give more time for viewport to be ready (in popup panel) -- related feedback
• Handle potentially invalid CSS selector (in logger)
• Ensure state of more/less in panel reflect locked/disabled sections
• Isolate generic cosmetic filters from specific ones in generated stylesheet
• Do not cname-uncloak same-origin network requests
• Prevent the creation of non-cosmetic extended filters in element picker
• Fix visual of DOM inspector layer in dark theme mode
• Improve extraction of tokens from regexes
• Use placeholders to minimize vertical shifting at page load time
• Bundled filter lists in releases are not timestamped
• Ensure procedural filters are applied at least once
• Code maintenance: replace uDom.js with dom.js

1.45.2

Commits to master since this release
Commits since last release

To install the stable build:

• Firefox: Click uBlock0_1.45.2.firefox.signed.xpi
  • uBO works best on Firefox.
• Chromium: Install from the Chrome store (CWS): https://chrome.google.com/webstore/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm
• Edge: Install from Microsoft Store: https://microsoftedge.microsoft.com/addons/detail/odfafepnkmbhccpbejgmiehpchacaeak
  • The Microsoft Store version of uBO is published by Nicole Rolls
• Opera: Install from Opera addons: https://addons.opera.com/en/extensions/details/ublock/

---

Fixes

• Test for unsupported pseudo operators after normalization
• Mind implicit prelude * element in pseudo operators

1.45.0

Commits to master since this release
Commits since last release

To install the stable build:

• Firefox: Click uBlock0_1.45.0.firefox.signed.xpi
  • uBO works best on Firefox.
• Chromium: Install from the Chrome store (CWS): https://chrome.google.com/webstore/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm
• Edge: Install from Microsoft Store: https://microsoftedge.microsoft.com/addons/detail/odfafepnkmbhccpbejgmiehpchacaeak
  • The Microsoft Store version of uBO is published by Nicole Rolls
• Opera: Install from Opera addons: https://addons.opera.com/en/extensions/details/ublock/

---

Fixes:

• Try to inject scriptlets at onResponseStarted() time
• Harden scriptlet injections
  • Might fix "ublock origin not blocking ads in the sidebar of Opera GX while using youtube music", to be confirmed
• Fix improperly detecting ruleset changes re. dynamic URL filtering
• Add new scriptlet: xml-prune
• New cosmetic filter parser using CSSTree library
  • Breaking change: filter list authors, please read the commit message
• Add support to report/filter SVG image elements in element picker
• Add original Firefox-authored google-ima shim script
• element-picker: Declare we support both light and dark color-schemes by @emilio
• Redesign document-blocked page
• Make popup panel reflect state of the actual blocked page
• Unescaped escaped commas in regex-based removeparam values
• Fix redundant calls to extract image data
• Extend matches-css() to support any pseudo-element

1.44.4

Commits to master since this release
Commits since last release

To install the stable build:

• Firefox: Click uBlock0_1.44.4.firefox.signed.xpi
  • uBO works best on Firefox.
• Chromium: Install from the Chrome store (CWS): https://chrome.google.com/webstore/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm
• Edge: Install from Microsoft Store: https://microsoftedge.microsoft.com/addons/detail/odfafepnkmbhccpbejgmiehpchacaeak
  • The Microsoft Store version of uBO is published by Nicole Rolls
• Opera: Install from Opera addons: https://addons.opera.com/en/extensions/details/ublock/

---

Fixes:

• Fix broken :not() operator when forcing parsing as procedural

1.44.2

Commits to master since this release
Commits since last release

To install the stable build:

• Firefox: Click uBlock0_1.44.2.firefox.signed.xpi
  • uBO works best on Firefox.
• Chromium: Install from the Chrome store (CWS): https://chrome.google.com/webstore/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm
• Edge: Install from Microsoft Store: https://microsoftedge.microsoft.com/addons/detail/odfafepnkmbhccpbejgmiehpchacaeak
  • The Microsoft Store version of uBO is published by Nicole Rolls
• Opera: Install from Opera addons: https://addons.opera.com/en/extensions/details/ublock/

---

Fixes:

• Force prodecural cosmetic filtering when explicitly stated
  • Using #?# instead of ## will prevent uBO from potentially using the declarative form of a filter where possible.
• Fallback to procedural :has() operator when argument is not a valid plain CSS selector
• Add missing method to shim script

1.44.0

Commits to master since this release
Commits since last release

To install the stable build:

• Firefox: Click uBlock0_1.44.0.firefox.signed.xpi
  • uBO works best on Firefox.
• Chromium: Install from the Chrome store (CWS): https://chrome.google.com/webstore/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm
• Edge: Install from Microsoft Store: https://microsoftedge.microsoft.com/addons/detail/odfafepnkmbhccpbejgmiehpchacaeak
  • The Microsoft Store version of uBO is published by Nicole Rolls
• Opera: Install from Opera addons: https://addons.opera.com/en/extensions/details/ublock/

---

New procedural cosmetic filter operator: :matches-media()

Commit

The argument must be a valid media query as documented on MDN, i.e. what appears between the @media at-rule and the first opening curly bracket (including the parentheses when required).

Best practice:

Use :matches-media() after plain CSS selectors, if any.

Good: example.com###target-1 > .target-2:matches-media((min-width: 800px))

Bad (though this will still work): example.com##:matches-media((min-width: 800px)) #target-1 > .target-2

Fixes:

• Add 0.5s mp3 redirectable resource
• Add queue-related initialization code to AMZN shim script
• Fix dark theme issue in DOM inspector
• Better detect invalid cosmetic filters
• Properly "bleed" 3p rules onto 3p-script/3p-frame cells
• Skip testing context when none present in acis scriptlet
• Ignore auto-repeat events in ctrl keydown event handler
• Fix popup panel for Thunderbird
• Prevent picker from being larger than viewport
• use WebAssembly-1.0 compliant function names (by @rathann)