# PopupKiller

> 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!

Canonical page: [https://chrome-stats.com/d/popupkiller](https://chrome-stats.com/d/popupkiller)

## Overview

- **ID:** `popupkiller`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Firefox user 13720782
- **Category:** other,tabs
- **Daily users:** 23
- **Rating:** 3.00 / 5 (4 ratings)
- **Version:** 1.4resigned1
- **Last updated:** 2024-04-25
- **First published:** 2018-01-24
- **Size:** 50 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/popupkiller/)

## Description

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.

## Rankings

- #22,848 — Overall

## Permissions and access

### Permissions

- `tabs`
- `activeTab`
- `storage`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [Site Killer](https://chrome-stats.com/d/site-killer)
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- [AdTab Killer — auto close unwanted new tabs](https://chrome-stats.com/d/adtab-killer-auto-close-tabs) — 34 users, 5.00 / 5
- [Kissanime Ad-hider](https://chrome-stats.com/d/kissanime-ad-hider) — 29 users, 4.87 / 5
- [Auto Closer](https://chrome-stats.com/d/auto-closer) — 15 users, 3.00 / 5
- [AdsKiller](https://chrome-stats.com/d/adskiller) — 8,374 users, 3.67 / 5
- [Popup Blocker Plus](https://chrome-stats.com/d/popup-blocker-plus-kho-anh-dep) — 1 users, 1.00 / 5
- [Poper Blocker - Popup Blocker for FireFox](https://chrome-stats.com/d/poper-blocker-pop-up-blocker) — 33,412 users, 4.51 / 5
- [PopupFilter](https://chrome-stats.com/d/popupfilteraddon) — 73 users, 3.75 / 5
- [Popup Blocker (strict)](https://chrome-stats.com/d/popup-blocker) — 85,681 users, 4.17 / 5
- [Popup Blocker Max](https://chrome-stats.com/d/popup-blocker-max) — 441 users, 4.82 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/popupkiller)