How to block X / Twitter on a Mac

Which method should you use to block X on a Mac?

Pick by browser and by how permanent you want the block to be. Every method below is reversible by you, so choose the one you will keep using. X has two addresses, x.com and twitter.com, and they are separate domains, so block both.

Can Screen Time block X on a Mac?

Yes, in Safari. Screen Time is built in, needs no Terminal, and restricts websites through Content & Privacy. Apple documents this for Safari, so plan on it covering Safari only and check Chrome yourself before relying on it. When you finish the steps, open x.com in Safari to confirm it is blocked, and in each other browser you use to see whether it is covered. To remove a site later, select it in the Restricted list and click the minus button. Anyone who can open your Screen Time settings can remove the entries unless you set a Screen Time passcode.

1. Open the Apple menu, then System Settings.

2. Click Screen Time in the sidebar (you may need to scroll) and turn it on if needed.

3. Open Content & Privacy and turn it on.

4. Open App Store, Media, Web, & Games.

5. Under Safari, choose Limit Adult Websites and click Customize.

6. Click + under the Restricted list, enter x.com, then repeat for twitter.com, and click Done.

How do you block X with the hosts file?

This applies to browsers on this Mac that use the system resolver or Chrome's own resolver, and needs Terminal and an admin password. The hosts file maps a domain to an address on your own Mac, so the site cannot load. It works per hostname, with no wildcards, so list each address you use. Chrome reads the hosts file itself, so Chrome's secure DNS setting does not bypass it.

• Open tabs and cached connections can keep a site loading until the cache is flushed and the browser restarted.
• A proxy or VPN that resolves names remotely does not read this Mac's hosts file.
• With iCloud Private Relay on, Safari sends its web requests through Apple's relays, so a hosts entry may not apply there; turn Private Relay off for Safari, then open the site to confirm it is blocked.
• To undo it later, open the file again, delete the four lines and flush DNS again.
• It is a manual, all-day block, so it also blocks X when you might want it.

1. Open the hosts file in Terminal.

   sudo nano /etc/hosts

2. Add these lines at the bottom, then press Control-O, Return and Control-X to save and exit.

   127.0.0.1 x.com
   127.0.0.1 www.x.com
   127.0.0.1 twitter.com
   127.0.0.1 www.twitter.com

3. Flush the DNS cache so the change applies now.

   sudo dscacheutil -flushcache
   sudo killall -HUP mDNSResponder

4. Quit and reopen your browser, then open X to confirm it is blocked.

What browser-level options block X?

Safari and Chrome both support extensions that block websites, and each only protects the browser it is installed in. Open another browser and X loads. Chrome has no built-in per-site block in its settings, so an extension is the usual route there. Use them as a light nudge, not a firm rule.

For browser-specific steps, see how to block websites in Chrome on Mac and how to block websites in Safari on Mac.

How do you block X only during work sessions?

Use a focus session so X is blocked when you work and open when you do not. Nudge blocks the apps and websites you pick for the length of a focus session. Websites are blocked in Safari and Chrome. If an X app is installed on your Mac, you can add that app to the same preset.

1. Open Nudge and create a preset, for example Deep Work.

2. Add x.com and twitter.com to the websites to block.

3. Add the X app if you have it installed.

4. Start the preset from the menu bar, or use Quick Focus for a one-off session.

5. Optionally, set a schedule so the preset runs on chosen days and hours.

How do you block X on an iPhone too?

Use Screen Time on the iPhone. Blocking on your Mac does not carry over to your phone, and Nudge is a Mac app, so phone blocking comes from Screen Time or another phone app.

1. Open Settings, then Screen Time.

2. To block the website, open Content & Privacy Restrictions (switch it on), then App Store, Media, Web, & Games, then Web Content, then Limit Adult Websites. Under Never Allow, tap Add Website and enter x.com, then twitter.com.

3. To limit the X app, choose App Limits and add it.

4. Set a Screen Time passcode so you cannot change the limit on impulse.

How do you keep X closed during work with Nudge?

Nudge is a free 7-day trial on every Mac with no email, password or card to start, then $9.99 once for Lifetime Access, with no subscription. Add x.com and twitter.com to a preset, start it from the menu bar, and X stays closed while you work and opens again when the session ends.

For a general overview, read how to block websites on Mac. Compare other tools in best website blocker apps for Mac. For the difference between blocking apps and blocking sites, read app blocker vs website blocker. A timer can help too: try the free Pomodoro timer.