3 Easy Ways to Disable Pop-ups in Firefox

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Simple ways to stop awful popups from ruining your internet experience

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Using Firefox Settings on Desktop

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Using Firefox Settings on iPhone

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Using Firefox Settings on Android

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Using Adblock Plus

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Using Firefox Focus

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Tips

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Warnings

This How.com.vn teaches you how to prevent pop-up ads from appearing in your Firefox browser on both desktop and mobile platforms. While it is impossible to eliminate 100 percent of pop-ups in Firefox or any other browser, you can decrease the number of pop-ups to virtually none by using Firefox's built-in pop-up blocker. You can also use a Firefox extension called Adblock Plus to block more obtrusive ads on desktop, while mobile users can download the free Firefox Focus app to browse ad-free.

Quick Steps to Block Firefox Pop-Ups on Desktop

Open Firefox.
Click the three-line menu in the upper-right corner.
Click Settings.
Click on Privacy & Security.
Scroll down to Permissions.
Check the Block pop-up windows box.

Method 1

Method 1 of 5:

Using Firefox Settings on Desktop

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Its app icon resembles an orange fox wrapped around a blue globe.
2
Click ☰. It's in the top-right corner of the page. A pop-out window will appear.^{[1]XResearch source}
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Click Settings. You'll find this in the pop-out window.
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Click Privacy & Security. It's a tab on the far-left side of the page.
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Scroll down to the "Permissions" section. This section is near the bottom of the page.
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Check the "Block pop-up windows" box. It's near the bottom of the "Permissions" section. Doing so ensures that Firefox will prevent pop-up windows, including ads, from appearing.
- If this box is checked, Firefox is already blocking pop-up windows.

Method 2

Method 2 of 5:

Using Firefox Settings on iPhone

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Tap the Firefox app icon, which resembles an orange fox wrapped around a blue globe.
This is in the bottom-right corner of the screen. Tapping it prompts a pop-up window.
It's at the bottom of the pop-up window. Doing so opens the Settings window.
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Tap the white "Block Pop-up Windows" switch
. The switch will turn blue, signifying that pop-ups are now blocked in Firefox on your iPhone.
- If the switch is blue, pop-ups are already being blocked.

Method 3

Method 3 of 5:

Using Firefox Settings on Android

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Tap the Firefox app icon, which resembles an orange fox wrapped around a blue globe.
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Tap the address bar. It's at the top of the screen.
- You may first have to scroll up to cause the address bar to appear.
Type about:config into the address bar and tap the "Search" key.
It's in the top-right corner of the screen.
Type in dom.disable_open_during_load and press the "Search" key.
If you see "true" written below the dom.disable_open_during_load text, Firefox is already blocking pop-ups.
Tap dom.disable_open_during_load, then tap Toggle.
Close the Firefox app, then re-open it. Firefox will now block ads, including pop-ups.

Method 4

Method 4 of 5:

Using Adblock Plus

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1
Open Firefox on a computer. Its app icon resembles an orange fox wrapped around a blue globe.
- Unfortunately, you cannot install Adblock Plus for use with Firefox on an iPhone or Android.
Open the Adblock Plus extension page. This is the page from which you can download Adblock Plus.
It's a blue button in the middle of the page.
You'll see this appear at the top of the window. Doing so installs Adblock Plus on Firefox.
It's a stop sign-shaped icon with a white "ABP" written across it in the upper-right side of the Firefox window. Clicking it prompts a drop-down menu.
This option is at the bottom of the drop-down menu. The Adblock Plus Options page will open.
It's in the "ACCEPTABLE ADS" section of the page.
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Browse pop-up free. Now that Adblock Plus is installed, you should be able to avoid the bulk of ads—pop-up or otherwise—in your Firefox desktop browser.
- You may occasionally still see ads, and some websites will require you to disable your adblocker in order to view their content.
- To disable Adblock Plus, click its icon (you may first have to click ☰ in the top-right corner of the window to see the icon), then click Enabled on this site.

Method 5

Method 5 of 5:

Using Firefox Focus

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1
Understand how to use Firefox Focus. Firefox Focus is a free version of Firefox for iPhone and Android smartphones; it has a built-in ad blocker which will prevent most pop-ups and other egregious forms of advertising from appearing.
- Firefox Focus is not available on Windows or Mac computers.
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Install the Firefox Focus app. To install it, open the
App Store (iPhone) or
Play Store (Android), then do the following:
- iPhone — Tap Search, tap the search bar, type in firefox focus, tap Search, tap GET to the right of the Firefox Focus icon, and enter your Touch ID or Apple ID when prompted.
- Android — Tap the search bar, type in firefox focus, tap the "Search" icon, and tap INSTALL under the Firefox Focus heading.
Once it finishes downloading, tap OPEN in your app store, or tap the purple-and-white Firefox Focus app icon.
It's in the upper-left corner of the screen.
Since Firefox Focus both includes and activates by default an aggressive ad blocker, you'll be able to browse without having to worry about pop-ups.

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Tips

In addition to having a built-in pop-up blocker, Firefox Focus has several security features which make it a safer browser than vanilla Firefox.
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