How do I block Bluesky on Mac across every browser?

Block it below the browser. Editing the /etc/hosts file in Terminal points bsky.app at 127.0.0.1 so Safari, Chrome, Firefox, and Arc are all blocked at once. The free Focuh desktop app does the same during a focus session and adds a timer you can't casually undo. Screen Time and browser extensions only cover one browser each, so Bluesky stays reachable elsewhere unless the block lives at the operating-system level.

Why does Bluesky still open in another browser after I block it?

Because the block was scoped to one browser. Screen Time governs Safari, and an extension governs the browser it's installed in. When you hit a blocked site, the autopilot move is to open it somewhere else, and a single-browser block leaves every other browser open. Blocking below the browser with the hosts file or a system-level app closes that gap, so Bluesky is unreachable everywhere at the same time.

How do I block Bluesky on Mac for free?

Two free routes cover every browser. The /etc/hosts file is built into macOS and redirects bsky.app across all browsers with no extra software, though it has no timer and is easy to edit out. The free Focuh app blocks at the system level during a focus session, covering Safari, Chrome, Firefox, and Arc together, and pairs the block with a timer and a menu-bar countdown. Both are free; the app adds friction the hosts file doesn't.

What domain do I block for Bluesky on Mac?

The web client lives at bsky.app, so that's the host to block. In the hosts file, add a line for bsky.app and one for www.bsky.app to be thorough. The Focuh app and most blockers that match on the hostname cover the subdomains from a single bsky.app entry. If you reach Bluesky through a third-party web client or a custom handle domain, add those hosts too so there's no side door left open.

Is the Focuh app harder to bypass than Screen Time?

Generally yes. Screen Time blocks Safari and can be turned off in a couple of taps if you know your passcode. The free Focuh Mac app blocks using macOS Accessibility APIs and ties the block to a running focus session, so there's no single per-browser switch to flip and the block resists a quick mid-session disable. No software is unbreakable, but OS-level blocking puts more friction between you and the bypass than Screen Time does.

Will blocking Bluesky on Mac also block the Bluesky desktop app?

The hosts file blocks any app that resolves bsky.app through normal DNS, so a desktop client that uses standard networking is covered too. A system-level focus app like Focuh is built to block distracting apps and sites together during a session. If your Bluesky habit is mostly a native client rather than a browser tab, lean on the app-aware blocker rather than the hosts file alone, since some apps use connections that slip past DNS.

Can I block Bluesky during work hours only on Mac?

Use a session-based tool rather than a permanent toggle. The free Focuh app turns blocking on when you start a focus session and off when it ends, covering every browser at once, so there's nothing to remember to re-enable. The hosts file has no timer, so work-hours blocking would mean editing it twice a day by hand. For a recurring schedule, a session-based all-browser block is the cleaner fit.

Do I still need a Chrome extension if I block Bluesky on my Mac?

Not for blocking — a system-level app already covers every browser, so an extension would be redundant on the same Mac. You might keep a Chrome extension for lightweight, browser-only blocking on a machine where you don't want a desktop app, or on Windows and Linux where the Mac app doesn't run. On a Mac, the system-level app is the more complete option and makes per-browser extensions unnecessary.

block BlueskymacOSsystem-level blockingwebsite blockerfocus

How to Block Bluesky on Mac (Free, 2026)

June 24, 20269 min readFocuh

The reason a Bluesky block keeps slipping on a Mac usually isn't willpower — it's scope. You block it in Safari, then open it in Chrome thirty seconds later. This guide shows you how to block Bluesky on Mac for free, using methods that work below the browser so the block applies to Safari, Chrome, Firefox, and Arc at the same time.

Two free routes genuinely cover every browser: the hosts file and a system-level focus app. The single-browser tools — Screen Time and extensions — are here too, so you can see exactly why they leave a door open.

Why single-browser blocks fail

Screen Time blocks Safari. A Chrome extension blocks Chrome. Each does its job and leaves every other browser untouched. When you hit a blocked Bluesky tab, the autopilot reaction isn't to give up — it's to open the same feed somewhere else. If you have three browsers installed, a Safari-only block is really a "blocked in one of three places" block.

Blocking Bluesky across every browser means moving the block down to the operating system. Once it lives there, there's no second browser to escape to, because the request never resolves no matter what opens it.

Method 1: Edit the hosts file (covers every browser, free)

The hosts file maps a domain to your own machine before any browser can reach the real server. It's built into macOS, free, and universal.

Open Terminal and run:

sudo nano /etc/hosts

Enter your password, then add a line for Bluesky and its common host:

127.0.0.1 bsky.app
127.0.0.1 www.bsky.app

Save with Control+O, exit with Control+X, then flush DNS:

sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder

Bluesky is now blocked in Safari, Chrome, Firefox, and Arc at once. The trade-off: there's no timer, you have to know each host yourself, and removing the block takes about thirty seconds — so nothing stops you undoing it on impulse. The mechanics are covered in more depth in system-level website blocking on macOS.

Method 2: A system-level focus app (every browser, plus a timer)

The hosts file blocks everywhere but has no friction and no timer. A system-level focus app fixes both while keeping the all-browser coverage.

The free Focuh desktop app for Mac blocks sites at the operating-system level during a focus session. While the session runs, Bluesky is unreachable in Safari, Chrome, Firefox, and Arc at the same time, and Focuh pairs the block with a focus timer, a menu-bar countdown, and a task list — so the block turns on when you start working and off when you finish. Because it uses macOS Accessibility APIs rather than a per-browser setting, it's harder to switch off mid-session than an extension or Screen Time.

This is the method for the feed you've "blocked" five times and keep ending up on anyway. Removing every browser route at once, and binding the block to a session instead of a manual toggle, is what makes it hold.

Ways to block Bluesky on Mac, compared

Method	Free?	Covers all browsers?	Has a timer?	Bypass friction
Screen Time	Yes	No (Safari only)	No	Low
Chrome extension	Yes	No (one browser)	Sometimes	Low
Hosts file	Yes	Yes	No	Low (easy to edit out)
SelfControl	Yes	Yes	Yes — set duration	High during a block
Focuh Mac app	Yes	Yes (OS-level)	Yes — focus session	High

The two bottom rows are the only ones that both cover every browser and resist a quick undo. The difference: SelfControl is a pure timed blocker you set for a fixed duration, while Focuh ties blocking to a focus session and wraps a timer, tasks, and a menu-bar countdown around it. If you're weighing the dedicated tools, the best website blockers for Mac in 2026 guide lines them up in detail.

Where Screen Time and extensions still fit

All-browser blocking is the goal, but single-browser tools aren't useless — they're just narrower.

Screen Time is fine when your Bluesky habit lives entirely in Safari and you trust your own passcode. It's built in and takes two minutes. The limit is that it ends at Safari's edge.
A Chrome extension is the lightest option if you only ever use one browser. If you want the browser-only route, the free Chrome guide to blocking Bluesky walks through it. The catch is in the name — it blocks that browser and no other.

If you find yourself switching browsers specifically to dodge the block, that's the signal to move up to an OS-level method. The switch is the symptom; all-browser blocking is the cure.

Why blocking below the browser changes the daily friction

There's a second benefit beyond coverage. With a per-browser block, you re-decide all day whether Bluesky is reachable — blocked here, open there, negotiating with yourself each time. An all-browser, session-based block collapses that into one decision: "the next 50 minutes are for work." The block follows from it, the same in every browser, and you stop relitigating the question every twenty minutes.

That's the real reason single-browser blocks keep failing. It isn't only that they leave another browser open — it's that they keep the choice live all day, and a live choice is one you'll eventually lose. Removing the choice in every browser at once is what makes the block stick.

Which method should you choose?

You use more than one browser — start with the hosts file for a free universal block, or the system-level app if you also want a timer.
You keep switching browsers to escape the block — use system-level blocking. The free Focuh app covers every browser during a session and resists a mid-focus undo.
You only ever use Safari and trust yourself — Screen Time is enough, with the caveat that it ends at Safari.
You only need Bluesky blocked in Chrome — the free Chrome method is faster to set up.

Every option here is free, so start with the lightest one that actually holds. If you've blocked Bluesky in one browser over and over and it keeps coming back, the fix isn't more willpower — it's blocking below the browser. Download the free Focuh app to block Bluesky across every browser on your Mac, or compare the dedicated tools with the SelfControl alternative breakdown.