1. Click Settings in the bottom right, then Search Settings.
2. Tick the Turn on SafeSearch box on the next screen.
3. To lock SafeSearch, you’ll need to sign in to your Google/Gmail account and follow the instructions.
Go to the Google website for more information.
1. Sign in to your Yahoo account.
2. Enter a search term in the search box then click Search.
3. From the search results, hover over the gear icon then click Preferences.
Go to the Yahoo website for more information.