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How to block a website in mozilla firefox

How to block a website in mozilla firefox

The internet is full of unwanted content, so you might want to restrict access to certain sites. While there’s no built-in feature in Mozilla Firefox for blocking websites, there are extensions that will get the job done.

Block a Website in Firefox on a Desktop

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 to block a website in mozilla firefox

On the next page, you’ll see some information about the extension, including the developer’s name and a brief description of the extension. Click “Add to Firefox.”

A message appears asking you to add Block Site. Essentially, this is asking your permission to:

  • Access your data for all websites
  • Display notifications
  • Access your browser tabs (in this case, only in Mozilla Firefox)

How to block a website in mozilla firefox

Another message appears, confirming that the Block Site extension has been added to Firefox. You can also select the checkbox next to the “Allow this Extension to Run in Private Windows” option if you want to enable it.

When you’re done, click “Okay, Got it.”

How to block a website in mozilla firefox

Now that the extension is added to Firefox, you can manage its settings. Click the hamburger menu at the top right to display the browser menu, and then click “Add-Ons.”

How to block a website in mozilla firefox

Alternatively, you can access Firefox’s add-ons by pressing Ctrl+Shift+A (Command+Shift+A on Mac), or by typing “about:addons” in the address bar.

How to block a website in mozilla firefox

In the pane on the left, click “Extensions.”

How to block a website in mozilla firefox

A list of your installed extensions will appear. Find “Block Site” and click the three dots next to it.

Select “Options” in the menu that appears.

How to block a website in mozilla firefox

On the next page, type the name of the website you want to block in the “Block a New Hostname” text box. Click “Add” to add the website to the block list.

You can also set a schedule for when to block the website. This is handy if you don’t want your children on Facebook after a certain time on school nights, for example.

How to block a website in mozilla firefox

Click “Save” in the “Tools” section to save your changes. You can ensure your settings can’t be changed if you set a master password.

Now, whenever someone tries to access the website(s) on the block list, they’ll see the message below.

How to block a website in mozilla firefox

Block a Website in Firefox on Mobile

The process for blocking a site in Firefox is a bit different on your iPhone, iPad, or Android device. Android provides a little more flexibility than iOS and iPadOS. You can download a free add-on for Android called Leechblock NG. It has mostly positive ratings, and it’s Firefox-specific, meaning it won’t restrict sites in other browsers, like Google Chrome.

After you install Leechblock NG, you just add the sites you want to block to the block list.

If you want to block a site on your iPhone or iPad, however, you have to do so via Screen Time. Any site you add to that list isn’t just blocked in Firefox; it’s blocked in any browser on any device that uses your iCloud account.

To set it up, go to Settings > Screen Time > Content and Privacy Restrictions. Toggle-On the “Content and Privacy Restrictions” option, and then tap “Content Restrictions.”

How to block a website in mozilla firefox

On the next screen, tap “Web Content.”

How to block a website in mozilla firefox

Next, tap “Limit Adult Websites,” and then tap “Add Website” under “Never Allow.”

How to block a website in mozilla firefox

Type the URL of the website you want to block, and then tap “Done.”

How to block a website in mozilla firefox

This website will now be blocked in Firefox and other browsers on your iPhone or iPad.

How to block a website in mozilla firefox

There are many reasons why you might want to block a website from your computer. The website might contain a virus that can infect your whole computer and jeopardize all of your files. Others could just be annoying pop-ups and some could contain explicit content that you don’t want to see or that that you don’t want your children to see. If you are a Mozilla Firefox user, blocking websites from the browser is quite easy. We’ll tell you just how easy it is in this OneHowTo article, how to block websites in Mozilla Firefox.

The easiest way of blocking websites in Mozilla Firefox is by using a free add-on called BlockSite. The BlockSite extension blocks sites which are added to its ‘black list’, but it can also be configured to disable links to blocked sites so that they don’t work rather than showing their hyperlinks. BlockSite also has ‘password protection’ that helps prevent unwanted changes to BlockSite. To get BlockSite working, go through the following simple steps.

How to block a website in mozilla firefox

For the first step, open Firefox, click ‘Tools’ and then ‘Accessories’. Click ‘Get add-ons’ and then ‘Browse all add-ons.’ Type ‘BlockSite’ in the search bar after Mozilla Firefox opens and hit ‘Enter.’

Next, click the ‘Add to Firefox’ button next to BlockSite. Allow the add-on to load (usually less than 5 seconds), then click on ‘Install Now’. Restart Firefox when you are prompted.

Go to ‘Tools’ then ‘Accessories’ then click the BlockSite ‘Preferences’ button after restarting Firefox. Make sure the radio button ‘blacklist’ is checked and ‘Enable BlockSite,’ ‘Enable warning messages’ and ‘Enable link removal.’

Type ‘Allow authentication’, then type a password if you want to prevent users from other blocked websites deleting or changing the settings in BlockSite without your permission.

Finally, click the ‘Add’ button, enter the URL of the website you want to block then click ‘OK’. To add more sites, repeat this process, or to clear the list, click the ‘Clear’ button. Once the list of blocked sites is complete, click ‘OK’ and restart Firefox.

How easy was that!? Now you will be able to browse with Mozilla Firefox and be free from any unwanted websites.

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