The fastest way to block most pop-ups
Most modern browsers have a built-in pop-up blocker that works automatically — you do not have to turn it on or install anything. When you visit a website, your browser stops the pop-up window from opening before you see it. If a pop-up still gets through, your browser usually shows a notification bar at the top of the page saying a pop-up was blocked, with an option to allow it if you want.
The pop-up blocker in Chrome, Firefox, Safari, and Edge blocks the majority of unwanted pop-ups without any action on your part. However, some websites deliberately create pop-ups that look like they are part of the page itself — these are harder to stop because the browser cannot tell them apart from real content. Knowing which tool works for which type of pop-up helps you choose the right solution.
Key Takeaways
- Your browser's built-in pop-up blocker stops most pop-ups automatically, and you can see which ones were blocked in the address bar notification.
- Pop-ups that appear to be part of the website itself require a browser extension because the built-in blocker cannot distinguish them from real content.
- Disabling JavaScript on specific websites stops some pop-ups but also breaks features like video players and login forms on those sites.
- If a website you trust is blocked, you can add it to your browser's exception list so pop-ups from that site will show.
Where to find and adjust your browser's built-in blocker
In Chrome, open Settings, select Privacy and Security, then Site Settings. Scroll down to Pop-ups and redirects and make sure it is set to Blocked. You will see the same option in Firefox under Settings, Privacy & Security, scrolling to Permissions and finding Pop-ups. Safari users go to Safari menu, then Preferences, Security tab, and check "Block pop-ups." Edge follows the same path as Chrome: Settings, Privacy, Security, then Site Settings and Pop-ups and redirects.
Once the blocker is on, you will see a small notification in your address bar whenever a pop-up is blocked — usually a small icon or text saying "Pop-ups blocked." Click that notification to see what was blocked and choose to allow pop-ups from that website if you want. This is useful when a website you trust needs to show you a pop-up window, like a login confirmation or a document preview.
Adding websites to your pop-up exceptions list
If you visit a website regularly and it needs to show you pop-ups — for example, a banking site that opens statements in a new window, or a work process that uses pop-ups for forms — you can tell your browser to allow pop-ups from that specific site. In Chrome and Edge, click the blocked pop-up notification and select "Always allow pop-ups and redirects from [website name]." In Firefox, the same notification gives you an option to allow pop-ups for that site. Safari does not show individual notifications, but you can go to Preferences, Security, and manage your pop-up exceptions there.
Adding a site to your exceptions list does not affect pop-ups from other websites — only that one domain will be allowed to show pop-ups. This keeps your blocker working everywhere else while letting trusted sites function the way they need to.
Using browser extensions for pop-ups that look like page content
Some websites create pop-ups that are actually part of the page design — a box that slides in from the side, an overlay that covers the content, or a modal window asking you to sign up for a newsletter. Your browser's built-in blocker cannot stop these because they are not technically pop-ups; they are just elements on the page. For these, you need an extension like uBlock Origin, Adblock Plus, or Pop-up Blocker for Chrome.
uBlock Origin is the most popular choice because it blocks both traditional pop-ups and these overlay-style pop-ups, and it uses very little memory. Install it from the Chrome Web Store, Firefox Add-ons, or Edge Add-ons. Once installed, it runs in the background. If a pop-up gets through, you can click the uBlock icon in your toolbar, then click the eyedropper tool and select the pop-up to block it permanently on that site.
Adblock Plus works similarly and is available on all major browsers. Both extensions let you see how many ads and pop-ups they have blocked on each page, which helps you understand how much unwanted content was trying to reach you.
Disabling JavaScript to stop pop-ups on specific sites
JavaScript is the programming language that makes interactive features work on websites — video players, dropdown menus, forms that check your input before you submit. It is also what many pop-ups use to appear on the page. If a website is particularly aggressive with pop-ups and you cannot block them any other way, you can turn off JavaScript for just that site.
In Chrome, go to Settings, Privacy and Security, Site Settings, JavaScript, and add the website to the "Block" list. In Firefox, type about:config in the address bar, search for "javascript.enabled," and toggle it off for sites you visit by using the extension NoScript, which gives you finer control. The downside is that disabling JavaScript often breaks other features on the site — video players may not work, login forms may fail, and interactive content will not function.
Use this method only as a last resort for websites you do not need to interact with much. For sites you use regularly, an extension like uBlock Origin is a better choice because it targets only the pop-ups, not all the JavaScript on the page.
Stopping pop-ups from email and messaging apps
Pop-ups are not limited to web browsers. Email clients like Outlook and Gmail, and messaging apps like Slack, can show notifications that behave like pop-ups. In Gmail, go to Settings, then Notifications, and choose which types of alerts you want to see. Outlook has a similar option under File, Options, Trust Center, Trust Center Settings, and then Notifications. Slack lets you control notifications in Preferences, Notifications, and choosing which events trigger alerts.
These settings are separate from your browser's pop-up blocker because they are not web pages — they are applications running on your computer or phone. Adjusting them does not affect how your browser handles website pop-ups.
What to do if your blocker is not working
If pop-ups are still getting through after you have turned on your browser's blocker and installed an extension, the first step is to check whether the extension is actually enabled. In Chrome, Firefox, and Edge, click the Extensions icon (usually a puzzle piece) in your toolbar and make sure the extension shows as active. If it is disabled, click it to turn it back on.
If the extension is on but pop-ups are still appearing, try clearing your browser cache and cookies. Sometimes old data can interfere with how extensions work. In Chrome, go to Settings, Privacy and Security, Clear Browsing Data, and select "All time" and "Cookies and other site data." Restart your browser after clearing. If pop-ups continue, the website may be using a method that even extensions cannot block — in that case, straightforward closing the pop-up window or tab is the only option.
Frequently Asked Questions
Can I block pop-ups on my phone?
Yes. Chrome for Android and Safari for iPhone both have built-in pop-up blockers that work the same way as the desktop versions. Go to Settings in your mobile browser, find the Privacy or Security section, and make sure pop-ups are blocked. Mobile browsers also support extensions on some platforms — Firefox for Android allows add-ons including uBlock Origin.
Why does a website say I need to disable my pop-up blocker?
Some websites ask you to turn off your blocker because they use pop-ups for legitimate features — opening documents, showing login confirmations, or displaying important notices. Instead of disabling your blocker entirely, add that website to your exceptions list. This lets pop-ups through only from that site while keeping your blocker active everywhere else.
Will blocking pop-ups slow down my browser?
No. Built-in pop-up blockers have almost no impact on speed because they work very efficiently. Browser extensions like uBlock Origin use slightly more memory, but the difference is usually not noticeable on modern computers. If you are concerned about performance, use your browser's built-in blocker first and add an extension only if you need to block overlay-style pop-ups.
What is the difference between a pop-up and a notification?
A pop-up is a new window or overlay that appears when you visit a website, usually without you clicking anything. A notification is an alert from your browser or an process, often appearing in the corner of your screen. Browser pop-up blockers stop pop-ups but not notifications. To control notifications, go to your browser's Settings and look for the Notifications section.