Open Settings
Tap Screen Time
Turn on Screen Time if it is off
Tap Content & Privacy Restrictions
Turn on Content & Privacy Restrictions
Tap Content Restrictions
Tap Web Content
Select Limit Adult Websites
Under Never Allow, tap Add Website
Enter the website you want to block
Tap Done
Repeat to add more websites
To block all websites except allowed ones, select Allowed Websites Only
Add approved websites under Always Allow
On Mac, open System Settings
Click Screen Time
Click Content & Privacy
Turn on Content & Privacy Restrictions
Click Content Restrictions
Set Web Content to Limit Adult Websites or Allowed Websites Only
Add blocked websites under Never Allow
Use a third-party content blocker from the App Store if needed
Install the content blocker
Open Safari
Go to Safari settings
Enable the content blocker extension
Add websites to the blocker’s list