It’s easy with Safe Surfer to install an effective porn blocker for a Firefox web browser. Along with protecting your privacy, we also use our own behind-the-scenes technology to block porn and other harmful online content. This guide will efficiently walk you through how to install protection.

Before we get started, we recommend that you consider using one of our system-wide installation methods instead. Protection installed within the Firefox web browser can be turned off, and other built-in web browsers (for example, Microsoft Edge or Samsung Internet) would otherwise not be protected. Click the links below to view our installation guides for AndroidiPhone, iPad, and iPodWindows 11, and Apple Mac.

Step 1: Install protection

Open the Firefox web browser and visit the Safe Surfer dashboard. Log in with your Safe Surfer account. On the left-hand sidebar, click the “Devices” menu.

Click the “+ New Device” button. Click “This device”. Click “Firefox”. Enter a name for this device listing, then click the Accept button. Click the link copy button found within the setup instructions. Log out of the Safe Surfer dashboard by clicking the three-dot button (at the upper-right corner) > Log out.

Click the three-bar button at the upper-right corner of the browser window. Click the Settings menu. Scroll down to the Network Settings section, then click the “Settings…” button. Click the “Enable DNS over HTTPS” checkbox. Click the Use Provider drop-down box and select Custom. Paste the link in the text box and click the OK button. 

Verify the protection installation by visiting This is a safe website designated for testing if pornographic websites are being blocked. This site should be blocked.

Protection complete

Great work! This web browser is now protected. To start monitoring protected devices, visit our easy-to-use online dashboard.

If you have any other Firefox web browsers you would like to protect, simply start again from the top of the guide. If you would like to protect a different kind of device, visit our Guides page.

Disclaimer: Safe Surfer Limited is in no way associated with the Mozilla Corporation or the Mozilla Foundation.