How do I permanently block a website on Firefox?

Go to This add-on, called Block Site (by Ray), lets you block individual websites in Firefox. It also lets you set up a private password so you’ll be the only person who can remove sites from the block list.

Can I block websites on Firefox?

To block a website in Firefox on your desktop PC or Mac, open Firefox and head to Mozilla’s official site for add-ons. In the search bar in the top-right corner of the window, type “Block Site.” Select the first item in the search results.

How do I block blocked sites on Firefox?


  1. Click Firefox’s “Tools” menu and select the “FoxFilter Settings” option to bring up the FoxFilter Settings page.
  2. Click the “Blocked” link in the menu and review the websites that display in the text box.
  3. Delete the websites you want and click the “Save Changes” button to finish.

How can I block add-ons?


  1. Click the menu icon ≡ at the top right of the browser.
  2. Click Tools, then select Extensions to open a new Options tab.
  3. Uncheck Enabled to disable an extension or click Remove to delete it completely.
  4. Click the Disable link under the plugin to disable.

Why are all my Firefox addons disabled?

1) Reboot the computer. 2) Do not run Firefox in Safe Mode. (Add-ons disabled) It’s possible that there is a problem with the file(s) that store the extensions registry. Type ”’about:support”’ in the address bar and press enter.

Can I block a specific website?

Open the browser and go to Tools (alt+x) > Internet Options. Now click the security tab and then click the red Restricted sites icon. Click the Sites button below the icon. Now in the pop-up, manually type the websites you want to block one-by-one.

How do I block all websites except one in Firefox?

You can block every website by adding to the blocked websites policy. Then, to add the 1 website that you are permitting, you would add that to the website filter exceptions list.

How do I disable third-party add-ons on my browser?

To disable third-party browser extensions:

  1. From the Tools menu, select Internet Options….
  2. Click the Advanced tab.
  3. Under Browsing, uncheck Enable third-party browser extensions (requires restart).
  4. Restart your computer.

Why does Mozilla block some add-ons from running in Firefox?

Why does Mozilla block some add-ons from running in Firefox? While most add-ons are created with the best intent to provide useful and delightful features, they can also be used to compromise personal data and security.

What types of add-ons are blocked?

Add-ons that cause stability or security issues are put on a blocklist. Starting in Firefox version 57, only extensions built using WebExtensions APIs will work.

What is blocklisting and how does it work?

Blocklisting (or blocking) is an action of last resort taken to protect Firefox users against add-ons (extensions, themes and plugins) that violate Mozilla’s add-on guidelines.

When do add-ons violate Mozilla’s Add-on policies?

May 19, 2020: Add-ons violating Mozilla’s add-on policies May 14, 2020: Night Shift mode May 14, 2020: Add-ons violating No Surprises policy