What's the best Chrome extension to block gambling sites?

Focuh is a strong free choice: it blocks unlimited gambling domains in one list, needs no account, and runs no telemetry. LeechBlock NG is the most configurable free option and supports password-protected blocksets that add real friction. But be honest with yourself about the stakes — a Chrome extension only blocks Chrome and can be disabled from chrome://extensions. For gambling specifically, pair the extension with a system-level blocker and, if betting is causing harm, professional support and a self-exclusion program.

Can a Chrome extension fully block gambling websites?

No, and it's important to be clear about that. A Chrome extension blocks tabs inside Chrome only. It won't block Safari, Firefox, a betting app on your phone, or a native desktop app, and it can be turned off in a few clicks. For idle browsing it adds useful friction. For a real gambling problem, an extension alone is not enough — you want OS-level blocking like the Focuh Mac app plus a formal self-exclusion scheme and, where money or wellbeing is at risk, professional help.

How do I block betting and sportsbook sites in Chrome for free?

Install a free blocker such as Focuh or LeechBlock NG and add every gambling domain you can think of — sportsbooks, casinos, poker rooms, and the betting sections of news and sports sites. When a tab tries to load one, the extension redirects it. Free tools cover unlimited domains, so you don't need to pay. The harder part is being thorough: gambling operators run many mirror domains, so block the apps and aggregators too, not just the main site.

Why is a Mac app better than a Chrome extension for blocking gambling?

A Mac app blocks across every browser and native app on your machine and is far harder to disable mid-session, which matters when the urge is strong. A Chrome extension leaves obvious escape routes — open Safari, install a different browser, or toggle the extension off. The Focuh Mac app blocks at the operating-system level using Accessibility APIs, so switching browsers doesn't defeat it. For gambling, that difference between one-click bypass and system-level enforcement is the whole point.

Can gambling sites be unblocked once I block them?

With a Chrome extension, yes — anyone can re-enable it from chrome://extensions or remove a domain from the list. That's a real limitation for gambling, where the moment of weakness is exactly when you'll reach for the off switch. To reduce that risk, use a blocker with password protection, hand the password to someone you trust, and add a system-level block on top. No tool on your own device is truly unbreakable, so external accountability and self-exclusion matter as much as the software.

Does blocking gambling sites also block betting ads?

Not directly. A website blocker stops you from loading gambling domains, but it won't strip betting ads out of other pages or apps. To cut the ads down, combine your blocker with an ad blocker and avoid sports and odds content that's heavy with promotions. The most effective move is blocking the destination — if the sportsbook domain won't load, an ad for it has nowhere to send you.

Is there free help for problem gambling?

Yes. Free, confidential support exists in most countries — for example, the US National Problem Gambling Helpline (1-800-522-4700) and GamCare in the UK. Many operators are required to offer self-exclusion that bars your account for months or years. Software blocking is a useful layer, but it works best alongside these programs. If gambling is affecting your money, work, or relationships, reaching out to one of these services is the strongest step you can take.

Is the Focuh gambling blocker really free?

Yes. The Focuh Chrome extension is free with no account, no telemetry, and no cap on how many gambling domains you block. Your list stays in local Chrome storage. The same team makes a free Focuh Mac app for system-wide blocking, so you can run both at no cost. For gambling specifically, using both together — plus self-exclusion — gives you far more protection than the extension alone.

Chrome extensionblock gamblingwebsite blockerfreeself-control

Best Chrome Extension to Block Gambling Sites (2026)

June 26, 202610 min readFocuh

If you want to stop opening betting sites, the quickest first step is a Chrome extension that blocks gambling domains before the page loads. Focuh is a solid free option — unlimited domains, no account, no tracking. But gambling deserves a blunter warning than most distractions: a Chrome extension blocks Chrome only and can be switched off in seconds, so for a real problem you'll want system-level blocking and a self-exclusion program on top. This guide covers both.

Gambling isn't quite like blocking YouTube. The cost of one slip is money, not just minutes, and the urge tends to spike exactly when your judgment is worst. So the right setup isn't "install one extension and forget it" — it's layered friction plus outside accountability.

How do you block gambling sites in Chrome for free?

Install a free blocker like Focuh or LeechBlock NG.
Add every gambling domain you can list — sportsbooks, casinos, poker rooms, and the betting sections of sports and news sites.
Add the aggregators and odds-comparison sites too, since those funnel you toward the books.
Start the block. If your blocker supports a password, set one and give it to someone you trust.

Operators run mirror and backup domains, so be thorough and revisit the list when you notice a new one slip through.

Best Chrome extensions to block gambling sites, compared

Extension	Free?	Site limit	Password protection	Best for
Focuh	Yes	Unlimited	No (use the Mac app for stronger enforcement)	Blocking a long list, no signup
LeechBlock NG	Yes	Unlimited (30 sets)	Yes	Adding friction with a password-locked set
BlockSite	Trial	3 sites	Paid only	Blocking one or two sites
StayFocusd	Yes	Unlimited	Limited	Daily time budgets

For gambling, the password column matters more than usual. A blocker you can disable on a whim provides little protection at the exact moment you need it. LeechBlock NG's password-locked blocksets are the most useful free feature here — but remember any extension can still be removed entirely from chrome://extensions.

What is Focuh?

Focuh is a free Chrome extension that blocks distracting websites — including unlimited gambling domains — during a focus challenge you set. No account, no telemetry, no ads. Your block list stays in local Chrome storage and never leaves your device.

Because there's no site cap, you can block every sportsbook and casino you know of in one list instead of triaging down to three. For gambling, the team's honest recommendation is to pair the extension with the free Focuh Mac app, which blocks at the operating-system level and is much harder to switch off.

Strengths

Unlimited gambling domains, free
No account or signup
No telemetry — confirmed in the privacy policy
Free Focuh Mac app for system-wide, harder-to-bypass blocking

Limitations

Blocks Chrome only — not Safari, Firefox, or phone apps
Can be disabled from chrome://extensions — a real risk for gambling
No built-in password lock in the extension

Try Focuh

Why a Chrome extension is not enough for gambling

This is the part most "best blocker" articles skip. A Chrome extension is the right first layer, but it leaves four open doors:

Other browsers. Open Safari or install Firefox and the block is gone.
Phone apps. Most betting happens in dedicated apps, which a desktop extension can't touch.
Native desktop apps. A browser extension only sees browser tabs.
The off switch. chrome://extensions is two clicks away, and the urge knows it.

For idle, what-are-the-odds browsing, the extension's friction is genuinely useful. For gambling that's costing you money or sleep, treat the extension as one layer in a stack — not the solution.

How to block gambling harder: the Mac app and self-exclusion

If you're on a Mac, add system-level blocking. The Focuh Mac app blocks gambling sites across every browser at once using macOS Accessibility APIs, so switching browsers doesn't get around it, and it's built to be hard to disable mid-session. Our system-level vs browser blocking explainer walks through why that matters, and the how to block gambling sites on Mac guide has the steps.

Software is only part of it. The strongest moves are the ones that take the decision out of your hands in the moment:

Self-exclusion. Most licensed operators offer it; many countries run national schemes that bar you for months or years.
Accountability. Give your blocker's password to someone you trust so you can't quietly turn it off.
Free helplines. The US National Problem Gambling Helpline (1-800-522-4700) and GamCare in the UK are free and confidential.

Blocking software lowers the temptation; these steps make a relapse genuinely hard. Use them together.

Which gambling blocker should you choose?

"I want to block a long list of sites for free, no account" — Start with Focuh in Chrome, then add the Focuh Mac app for system-level enforcement.

"I want a password-locked block so I can't easily undo it" — Use LeechBlock NG with a password-protected blockset, password held by someone you trust.

"I need this to actually hold during a strong urge" — Don't rely on an extension. Use OS-level blocking plus operator self-exclusion, and call a free helpline if betting is causing harm.

A Chrome extension is a good place to start, not a place to stop. The honest version of the answer is that gambling beats one-click software, so build the layers — extension, system-level block, self-exclusion, a person who knows the password — and the slip you're worried about gets a lot harder to make.

Install Focuh — free, no account. Then get the free Focuh Mac app to block gambling across every browser, not just Chrome.