🦊

Install SafeGuard on Firefox

Same protection as Chrome — works on Firefox desktop.

⏱ Takes about 5 minutes

Why bother?

Firefox uses a different extension format than Chrome, so it needs its own download. Setup is just as quick.

1
Download safeguard-firefox.zip
Use the Firefox button on the home page.
2
Unzip the file
Right-click → Extract All (Windows) or double-click (Mac).
3
Open about:debugging
Type about:debugging#/runtime/this-firefox into the address bar.
4
Click "Load Temporary Add-on…"
Pick the manifest.json file inside the unzipped folder.
5
Click the SafeGuard icon in the toolbar
Pick the age group and set a parent PIN.
6
Heads up — temporary install
Firefox removes unsigned add-ons when you restart the browser.

We don't tell you setup is complete until you've tested it with your own eyes.

1. Open a normal website
On the device you just set up, open a regular site like google.com or your local news. It should load normally.
✅ It loaded normally
2. Try a blocked test website
Now open this safe test URL — it's a harmless page that adult-content filters block. If your blocker is working, the page will NOT load (you'll see an error or a block screen).
Open test page →🚫 It was blocked (didn't load)

Both tests didn't pass — what to try

Restart the device's Wi-Fi (off then on). On a phone, turn cellular data off so it has to use Wi-Fi. Then try the test again.

Both tests must pass before we mark this complete.

No parental control catches everything. Here's what slips through, and what to do about it:

If your child has a cellular data plan, blocks on your home Wi-Fi don't apply when they're not at home.
If your child turns their phone into a hotspot, other devices using it skip your Wi-Fi filters.
On a friend's Wi-Fi, your home filter does nothing.
A VPN can hide their traffic from filters that only check websites by name.
Installing a second browser can bypass a single-browser extension.

You did it. 🎉

Tell your kid you set this up, and why. It works way better when it's not a secret.