Tidy My Mac
Guide · Updated November 3, 2026
Ad blockers for Mac: uBlock Origin in Safari, and ads in every app
There are three kinds of ad blocker on a Mac, and each misses something the others catch. Here is what works in Safari, Chrome and Firefox today, including what happened to uBlock Origin, and how to block ads in the apps no browser extension reaches.
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The short answer: the full uBlock Origin runs only in Firefox now. For Safari, install uBlock Origin Lite from the Mac App Store, free, and turn it on in Safari › Settings › Extensions; Chrome has uBlock Origin Lite too. Extensions only work in their own browser, so for ads and trackers in every browser and app at once, add a blocker that works at the DNS level, such as Tidy My Mac's Web Protection. Using both is the most complete setup.
Is uBlock Origin available for Safari?
Not the full version. Safari doesn't let extensions inspect and change every request the way uBlock Origin does in Firefox; it only accepts content blockers, which hand Safari a list of rules in advance. Since August 2025 the same developer, Raymond Hill, publishes uBlock Origin Lite for Safari in the App Store, free, built on those rules. It blocks most ads and trackers with its default lists, but it has fewer options than the full extension and can't keep up with every trick a site uses.
Check that the developer is Raymond Hill before you install it: the App Store has many look-alikes with similar names.
How to add an ad blocker to Safari
- Install the content blocker from the Mac App Store, such as uBlock Origin Lite, AdGuard for Safari, 1Blocker or Wipr.
- Open Safari and choose Safari › Settings, then click Extensions.
- Tick the blocker's checkbox. Some come with more than one item to tick, for example one per list.
- Reload the page you were on. To let a site you want to support show its ads, most blockers have a button for that site in the toolbar.
Safari has no ad blocker of its own, but it already limits cross-site tracking, and on a page full of clutter you can click the page menu in the address bar and choose Hide Distracting Items.
Chrome, Edge and Firefox on a Mac
- Chrome and Edge no longer run the full uBlock Origin: Google switched off the older kind of extension it was built on in 2025. Install uBlock Origin Lite from the Chrome Web Store instead. It works like the Safari version, with rules given in advance.
- Firefox still runs the full uBlock Origin, with its element picker and every filter list. If blocking matters most to you, Firefox with uBlock Origin is the strongest browser setup on a Mac.
- Brave and some other browsers block ads on their own, with no extension needed.
The three kinds of ad blocker
| Kind | Where it works | What it misses |
|---|---|---|
| Browser extension, such as uBlock Origin in Firefox | One browser. It can hide empty boxes and block ads served from the site's own address. | Every other browser and app. |
| Safari content blocker, such as uBlock Origin Lite | Safari, with rules set in advance. Light on the battery. | Other browsers and apps, and ads that change faster than the rules. |
| DNS-level blocker, such as Web Protection | Every browser and app, by refusing to look up ad and tracker servers. | Ads served from the same address as the page, such as YouTube's, and browsers that use their own secure DNS. |
That is why the two work best together: a DNS-level blocker covers your mail app, games, free utilities and every browser at once, and an extension in your main browser cleans up what is left on the page.
Are ad blockers safe?
The well-known ones are. But “ad blocker” is also one of the most common disguises for adware: an extension that promises to remove ads, then injects its own or changes your search engine. Install blockers only from the App Store or your browser's own store, check the developer's name, and be wary of an extension that asks to read and change data on every website when it has no reason to. See how to remove adware and malware from a Mac if one already took over your browser.
Block ads in every app with Tidy My Mac
- Web Protection blocks ad and tracker servers, as well as phishing, scam and malware sites, in every browser and app on your Mac, with no extension in each. Lists update daily, the check runs on your Mac, and the sites you visit are never sent anywhere.
- Browser Extensions lists the extensions in seven browsers and rates each by how much it can read, so a fake ad blocker stands out.
- Adware finds the profiles, policies and proxies that hijack a browser and keep coming back.
Questions about ad blockers
For Safari and Chrome, uBlock Origin Lite: free, open source and from the developer of uBlock Origin. For Firefox, the full uBlock Origin. Neither covers apps outside the browser.
No. It limits cross-site tracking and can hide distracting items on a page you choose, but blocking ads takes a content blocker from the App Store.
Yes, with a blocker that works at the DNS level for the whole Mac, such as Tidy My Mac's Web Protection. It covers every browser and app that uses macOS for lookups, except browsers set to use their own secure DNS.
Only with a browser extension, and not reliably: YouTube serves ads from its own servers and changes how it does so often. DNS-level blockers can't block them without blocking YouTube itself.
Usually the opposite: pages load faster without ads and trackers. Safari content blockers and DNS-level blocking are especially light, since they don't have to inspect each page.
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