Nowadays, porn is easily accessible due to the internet. For example, people can easily visit adult websites using web browsers like Firefox, as long as there is a computer or smartphone and internet connection. Exposure to porn harms children and teens. Watching porn can also negatively impact adults. This article shows you how to block porn on Firefox on desktop and mobile with different porn blockers.
Cisdem AppCrypt
Free Download Windows 11/10/8/7 
Free Download macOS 10.12 or later
If you are a Windows user, you can use Cisdem AppCrypt, the best website blocker and app locker for computer. When working as a porn blocker, AppCrypt can do the following things.
(AppCrypt is also available for Mac. AppCrypt for Mac doesn’t support Firefox.)
Below are the steps.
1. Download and install AppCrypt.
Free Download Windows 11/10/8/7
2. The first time you open it, set a password. It’s recommended to select the Launch at System Startup checkbox.
3. Click the AppCrypt icon in the taskbar. Alternatively, right-click the icon and choose Open Main Window.
4. To access the main window, please enter the password.
5. Click the Web Block tab. Install the extension on your Firefox.
6. In the URL field, enter the specific adult website you want to block. Click Add.
You can add specific websites, pages and keywords to the block list. You can also click the Import dropdown menu and then choose Porn Sites, which will automatically add tons of popular adult websites to the block list. You can even import your own list of unwanted websites.
7. Go to Preferences. Select the Lock browser when the extension is disabled or uninstalled checkbox.
Now the websites, pages and keywords on the block list are blocked on Firefox and other supported browsers on your PC. The blocking applies to the normal browsing mode and the private browsing mode. When one tries to visit a blocked porn website, the website won’t open.
There are six ways to temporarily or permanently unblock a website, page or keyword, such as quitting AppCrypt, removing the item from the block list, or disabling or removing the extension. But any of the six ways requires the password. (Once one disables or removes the extension, Firefox will be immediately locked with the password and remain so.)
Therefore, only people who know the password can do the unblocking. If you want to prevent yourself from accessing porn, you can ask someone else, like a family member, to set the password for you.
Tip: If you want to make all porn sites inaccessible, this tip may help. Under Web Block, turn on Block all websites and click Exceptions. Add the approved websites to the Always Allow list. This way, Firefox will only be able to open the sites on the Always Allow list. The Always Block list is also worth mentioning. Items on the Always Block list are always blocked, without being affected by the General Schedule feature.
BlockSite is a porn blocker extension available for Firefox. This extension allows users to block specific inappropriate websites. It also provides a Block Adult Sites option. Turning this option on doesn’t actually block all adult sites but can block most of them.
There is a Password Protection feature, which can only prevent one from changing the extension’s options or disabling the extension. It can’t prevent the extension from being removed. Therefore, this extension is not that effective.
1. Open Firefox. Go to about:addons.
2. In the Search addons.mozilla.org field, enter BlockSite.
3. Click Add to Firefox and then click Add.
4. Click the extension’s icon in the toolbar. Click the Settings button in the top right corner.
5. On the left, turn on Block Adult Sites.
6. This step is optional. If turning on Block Adult Sites doesn’t block the adult website that you need to block, choose Block Sites on the left and then add the website.
7. Go to about:addons. Find BlockSite and click it.
8. On the page that appears, scroll down until you see Run in Private Windows.
9. Select Allow.
Although the Password Protection feature is not effective in preventing the blocking from being bypassed, enabling this feature does add an extra barrier to bad content. To turn on this feature, choose Password Protection on the left and select the option(s) you need from the three options provided. It’s recommended to select all three options.
If you are an Android user, you can use BlockerHero. BlockerHero allows you to restrict access to most adult content on Firefox, Firefox Lite, a few other browsers it supports and social media apps like Twitter with a single tap. You can also add specific websites and keywords to the block list. In addition, you can add an extra layer of restriction by disabling image and video search on Firefox.
If you have added an Accountability Partner and turned on the Uninstall Protection feature, you won’t be able to uninstall the app. The Accountability Partner can also prevent you from changing any setting in BlockerHero. Therefore, it’s not easy to bypass the blocking.
1. Install BlockerHero from the Play Store. Open it.
2. Tap the Blocking tab at the bottom of the screen.
3. This step is optional. In the Accountability Partner section, add an Accountability Partner.
4. In the Content Blocking section, turn on Block Adult content.
5. This step is optional. In the Uninstall Protection section, turn on Uninstall & Settings Protection.
6. In the Advanced features section, turn on Block Unsupported Browsers.
7. Tap the Blocklist tab at the bottom of the screen. Tap the Add button.
8. Tap Keyword. Add specific porn sites and keywords like “porn”, “adult”, “sex”, “sexy” and “nude”.
You can skip the last two steps if you think the Block Adult content feature already does a good job of filtering adult content.
Thanks to Screen Time, a set of settings included in iOS 12 or later, iPhone users can easily implement restrictions on web content. Screen Time has an adult content blocker, which is strict enough to block most inappropriate content. But sometimes it can be so strict that it also blocks certain appropriate websites and pages.
Screen Time on iPhone supports Safari and some non-Safari browsers like Firefox, whereas Screen Time on Mac only supports Safari. Screen Time is included in macOS Catalina or later.
1. On your iPhone, go to Settings.
2. Tap Screen Time.
3. Tap Content & Privacy Restrictions. Turn it on.
4. Tap Content Restrictions. Go to the Web Content section.
5. Tap Web Content.
6. In the screen that appears, tap Limit Adult Websites.
7. This step is optional. In the Never Allow section, tap Add Website. Enter the porn site you want to block. Tap done. Add other porn sites if needed.
8. Go to the Screen Time main screen and tap Use Screen Time Passcode. Set a passcode.
Tip: If Screen Time is too strict and blocks certain pages on the appropriate websites that you often use, you may find this tip helpful. In step 7, go to the Always Allow section and add these websites. For example, you may want to add wikipedia.org to the allow list.
If you are a parent, you can block inappropriate web content to prevent your children from being intentionally or accidentally exposed to such content. If you are an adult who watches too much porn or wants to help a family member quit porn addiction, you can restrict access to such sites. This article talks about how to block porn content on Firefox browser. I hope it’s helpful. In addition to Firefox, the four methods support some other browsers.
Rosa has worked in Mac software industry for more than eight years. She believes that the purpose of software is to make life better and work more productively. In addition to writing, Rosa is also an avid runner.
