On page load, compares URL to a user-created list. Closes tab/page if there is a match. Useful for websites like Kissanime, where all popups go through the same redirector website first, then to the ad. Go to Options > Load Defaults after install!

What is PopupKiller?
PopupKiller is a Firefox add-on that acts like a popup blocker, but instead of preventing popups from opening, it immediately closes the window after opening. It is undetectable by websites and offers protection on websites like Kissanime. Easily customizable through the Options page.
Users: 26 ▲ 1
Rating: 3.00 (4)
Version: 1.3 (Last updated: 2018-09-04)
Creation date: 2018-01-24
Weekly download count: NaN
Firefox on Android: Yes
Risk impact: Moderate risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
  • tabs
  • activeTab
  • storage
Size: 48.91K
Stats date:

Chrome-Stats Rank

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Not available on Edge
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Similar to a popup blocker. Downside is it is severely limited; upside is it is undetectable by any websites. Popup blockers prevent popups from opening; this add-on instead closes the window immediately after opening. Be careful to not add any patterns that will match Google, Yahoo, Gmail, Wikipedia, etc. In the Options page you can specify your homepage/newtab page; they will be protected regardless of what you put in the kill-list. You can also add a set of "default" websites that should give you good protection on Kissanime.

User reviews
Works perfect,it does what it's suppose to do. But would have appreciated if it had an (easy to access) disable button
by yes102, 2020-01-05

Good Idea, but doesn't work

View all user reviews
Risk impact

PopupKiller may not be safe to use and it requires some risky permissions. Exercise caution when installing this add-on. Review carefully before installing.

Risk likelihood

PopupKiller has earned a fairly good reputation and likely can be trusted.

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