On Mac and supervised iPhone devices, a Device Config can be customized to apply SafeSearch on supported Browsers directly. 

Here's how you should customize the Device Config Generator.

Customize Config File

For supervised iPhones:

• Go to Config Generator > iOS Config > Web on the dashboard.
• Toggle Enable Automatic Adult Content Filter on.
• Save and sync the Config to your device.
• Restart all browser apps on your iPhone. See this article for more guidance.

For Mac devices:

• Go to Config Generator > iOS Config > Web on the dashboard.
• Toggle Enable Automatic Adult Content Filter on.
• Save and sync the Config to your device.