Press the three dots next to the Block Site Firefox extension.Click “Extensions” in the right sidebar.OR: type “about:addons” in your URL bar.Open your add-on settingsYou can do so by pressing the hamburger menu in the top-right and then clicking “Add-ons and themes”, or by pressing Ctrl + Shift + A.Press “Okay” to the “Block Site was added” prompt.Click “Add” to accept the permissions prompts.We recommend you click it from the list and install it so you can follow along.

The extension we’ll be using is called Block Site by a user called Ray. Go to the Firefox add-on store and type “Block Site” in the search bar. You can even block websites at certain times of day – for example blocking YouTube while you’re working. Though you’ll have to download a Firefox site blocker extension to close off websites, doing so is very easy and using one is simple. With that said, here’s how to block a website on Firefox desktop and mobile: How to Block a Website on Firefox Desktop If that makes you uncomfortable, we recommend you use a different browser on desktop and mobile, such as Opera. Instead, you’ll have to install a third-party extension and allow it access to your browsing data. At the time of writing, there’s no in-built way to effectively block websites in Firefox desktop. This is what we’re going to show you today.īefore we start, though, there’s something important to note. If you’re a regular user of Mozilla’s browser, then, it’s incredibly useful to know how to block a website on Firefox and Mobile. It also has a lot of not-safe-for-work content that you may not want employees of younger members of your family to access. While the sites we frequent tend to be high quality, the truth is that the internet is full of low quality, spammy, and even malicious content. 3 How to Change Default Search Engine and Clear Cookies/Cache.2 How to Block a Website on Firefox Mobile.1 How to Block a Website on Firefox Desktop.

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