el1t
uBlock-Safari
JavaScript2016–2025
el1t / uBlock-Safari
uBlock-Safari
uBlock Origin - An efficient blocker for Chromium, Firefox, and Safari. Fast and lean.
48Distinct people
54Mentions
0Explicit recommenders
2.7KGitHub stars
What to know before exploring
What it is
uBlock Origin - An efficient blocker for Chromium, Firefox, and Safari. Fast and lean.
GitHub
Where it is used
No documented product use was verified in the last source check.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year54 dated mentions
Observed mentions: 2016-12-05 13:47:56 UTC to 2025-08-05 18:43:32 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 5 | 2 | 3 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 3 | 0 | 3 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 5 | 0 | 5 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 10 | 1 | 9 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 6 | 0 | 6 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 12 | 2 | 10 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 8 | 0 | 8 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 4 | 0 | 4 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 1 | 0 | 1 |
From the project README
An excerpt from the repository, fetched Nov 13, 2026.
Read the project’s introduction
uBlock Origin
for Safari
pronounced you-block origin (/ˈjuːˌblɒk/) — you decide what enters your browser.
An efficient blocker add-on for various browsers. Fast, potent, and lean.
Regarding this Safari port
The majority of this code is shared with upstream. Platform specific portions are under development.
Much of the platform shim from the original uBlock Safari version is still being used.
Installation
Building
Release History
Further Documentation
About
License
Installation
The preferred method of installation is to install from the extension gallery.
This allows the extension to update automatically, and the submissions are approved by Apple.
To learn more about installation and updates, visit the wiki.
Compatible with Safari 11, untested on older versions (but should work).
Note
To benefit from uBlock Origin's higher efficiency, it's advised that you don't use other inefficient blockers at the same time (such as AdBlock or Adblock Plus). uBlock₀ will do as well or better than most popular ad blockers. Other blockers can also prevent uBlock₀'s privacy or anti-blocker features from working properly.
Building
Development
To build and load an unpacked extension for development:
Clone uBlock-Safari and uAssets into the same parent directory
Build by running ./tools/make-safari.sh in uBlock-Safari's directory
Install the unpacked extension through Safari's Extension Builder
In Safari, load the Extension Builder (Develop > Show Extension Builder)
Click the + button in the bottom left corner and "Add Extension"
Select dist/build/uBlock0.safariextension
Click install and enter your password
You will have to reinstall from this panel every time you restart Safari
If you don't see a Develop menu in Safari, you can run
defaults write com.apple.Safari IncludeDevelopMenu -bool true
or go to Preferences > Advanced > Show Develop menu in menu bar.
Example clone and build:
# Clone
git clone https://github.com/uBlockOrigin/uAssets.git
git clone https://github.com/el1t/uBlock-Safari.git
# Build
cd uBlock-Safari
./tools/make-safari.sh
echo 'Output is in dist/build/uBlock0.safariextension'
Release
To build and sign for release (certificates required):
Clone uBlock-Safari and uAssets into the same parent directory
Build by running ./tools/make-safari.sh all in uBlock-Safari's directory
Requires xar-mackyle, which will be built if not found
Release History
See the releases pages for a history of releases and highlights for each release.
Further Documentation
Visit the upstream uBlock Origin wiki for further documentation.
About
uBlock Origin's manifesto.
Free. Open source. For users by users. No donations sought.
Without the preset lists of filters, this extension is nothing. So if ever you
really do want to contribute something, think about the people working hard
to maintain the filter lists you are using, which were made available to use by
all for free.
You can contribute by helping translate uBlock₀ on Crowdin.
License
GPLv3.
Read the full README on GitHubWhat Hacker News says
54 sourcesSafari has had Manifest V3 like restrictions for years now. https://github.com/el1t/uBlock-Safari/issues/158
Microsoft announced Edge will stop supporting Manifest V2. https://learn.microsoft.com/en-us/microsoft-edge/extensions-...
This means more users for Firefox, on platforms that actually support it.
In Google plans to disable legacy V2 browser extensions next JuneYou are mistaken. Safari removed the APIs necessary for an uBlock port (there used to be one), see https://github.com/el1t/uBlock-Safari/issues/158.
Injecting code via Web Extensions is too late for reliable blocking - by then, either the malicious JS you are trying to defuse has already ran (if it wasn't blocked declaratively), or if not then the rest of the page's JS depending on it has already exploded and "fixing" it after the fact (by substituting a neutered shim via Web Extensions) doesn't fix the rest of the page.
In uBlock Origin Lite now available on FirefoxOh for fuck’s sake. Safari has had extensions since 2010, and uBlock Origin supported it until 2018.
The problem vis-a-vis uBO that in 2018, Safari switched its extension framework. It no longer supports the WebExtensions framework, instead using a native (proprietary) implementation. The new framework requires extensions to be packaged as apps, and is less featureful in terms of what extensions can do and access than the older framework. Consequently, uBlock Origin decided not to support the new extension framework (https://github.com/el1t/uBlock-Safari/issues/158).
In Ask HN: Why does Firefox have such a low market share anyways?It has been there but won't ever be again: https://github.com/el1t/uBlock-Safari/issues/158
In uBlock Origin 1.49.2 Available as Thunderbird Add-OnLooks like the answer is no, Safari is not supported.
> ..as of 2022, uBlock Origin’s extension is available for several of the most widely used browsers, including: Chrome, Chromium, Edge, Opera, Firefox and all Safari releases prior to 13.
https://ublockorigin.com/
Explanation of the state of uBlock Origin (and other blockers) for Safari - https://github.com/el1t/uBlock-Safari/issues/158
Apparently, the only WebKit-based browser that can run uBO is Orion browser (beta, Mac only).
https://browser.kagi.com/
In DuckDuckGo for Mac beta now open to the publicThat's funny, I remember people saying the same thing when Safari limited support for browser extensions: https://github.com/el1t/uBlock-Safari/issues/158
In Apple’s ad business set to boom on the back of its own anti-tracking crackdownI don't know if it is cartelisation (both Apple and Google have an ad division and it is in their interest to work together on some aspects of this business) or Google bribed Apple (through its ios search engine deal), but Safari webkit also has limitations in ad blocking through the content blocking API which Apple created for Safari. (See Explanation of the state of uBlock Origin (and other blockers) for Safari #158 - https://github.com/el1t/uBlock-Safari/issues/158?ysclid=l7g3... ).
In AdGuard publishes the first ad blocker built on Manifest V3The nerfed experience of addons only specifying a significantly limited list of blocking rules, giving up being able to autonomously allow or deny each request with arbitrary parameters, surrogate scripts (replacing the original, tracking ones with privacy-friendly reimplementations) and cosmetically alter the webpage (e.g. fixing the layout with missing ads).
Partial source: https://github.com/el1t/uBlock-Safari/issues/158
In Apple's claim is that it bans other browsers for security> as of IOS15 the Safari Extension API has everything uBlock would use
Does it? My understanding is that the Safari Extension API isn't suitable for uBlock Origin: https://github.com/el1t/uBlock-Safari/issues/158
In Apple is not defending browser engine choicehttps://github.com/el1t/uBlock-Safari/issues/158
> It will not possible for uBlock Origin to work with the upcoming Safari 13 / macOS Catalina release
In Ask HN: How hard would it be to port ublock origin to Mac Safari?Apple is the reason.
https://github.com/el1t/uBlock-Safari/issues/158
In uBlock Origin 1.41You can't¹. There is a new browser called Orion² currently in private beta that uses the same engine as Safari, which you can use Firefox and Chrome extensions on. It works both on Mac, and surprisingly on iOS. I believe it's the only browser on iOS that allows you to use -some- desktop extensions. I use uBlock Origin with it on iOS and it works good enough.
¹ https://github.com/el1t/uBlock-Safari/issues/158
² https://browser.kagi.com/
In Show HN: Let's Block It – Custom uBlock Origin Filters Made EasyThe safari change absolutely kneecapped content blockers. Ublock dropped it[0], and the remaining few providers, like AdGuard, have to do all sorts of trickery[1] to get even close to the same performance.
If you're going to argue this is better, don't point us to such a clearly worse result.
[0]:https://github.com/el1t/uBlock-Safari/issues/158
[1]:https://adguard.com/en/blog/safari-adblock-extensions.html
In Chrome users beware: Manifest v3 is deceitful and threateninguBlock origin put Ghostery lite in list of good replacement for people on safari so I'm confused now.
https://github.com/el1t/uBlock-Safari/issues/158
In Goodbye BraveShowing the 15 most recent of 54 sources. Enable JavaScript to search and browse every indexed mention.