A reliable popup blocker with history
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src small update for German locale Sep 4, 2018
test edge compatibility fixes and more Aug 24, 2018
LICENSE adding LICENSE Sep 6, 2017
README.md additional info in ReadMe Oct 2, 2018


img Popup Blocker (strict)

Popup Blocker is a lightweight extension to prevent websites from opening popups (whereas other popup blockers this extension does not block popups after their creation, but blocked them once they are requested). The extension pauses all sort of window opening requests for user attention. You can either accept or deny a request. Multiple unique requests are shown in an array. If a websites requests a single URL more than once, a badge number will be shown indicating the total number of requests to this particular URL.



  1. Deny popup request
  2. Allow popup request
  3. Open popup request in a background tab
  4. Redirect current page to popup URL source

Supported blocking methods:

  1. window.open
  2. a->target=_blank


Install the latest version from your web browser Add-ons web site.

Firefox / Firefox for Android https://addons.mozilla.org/firefox/addon/popup-blocker/

Chromium / Chrome https://chrome.google.com/webstore/detail/popup-blocker-strict/aefkmifgmaafnojlojpnekbpbmjiiogg

Opera https://addons.opera.com/fr/extensions/details/popup-blocker-ultimate/

Microsoft Edge https://www.microsoft.com/en-us/store/p/popup-blocker/9ng26z2368n6


Please go to

Test the effectiveness of this tool

Please go to



Make a Donation

If this project help you, you can give the developer a cup of coffee :)

  • PayPal


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  • Ether Address:


Help with Translation

You can now translate Popup Blocker (strict) into your language; https://www.transifex.com/github-7/popup-blocker-strict/


Popup Blocker (strict) is an open-source project released under MPL-2.0