![](https://addons.mozilla.org/user-media/addon_icons/926/926077-64.png?modified=1518895711)
PopupKiller
What is PopupKiller?
Add-on stats
- tabs
- activeTab
- storage
Other platforms
Add-on summary
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
Add-on safety
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 is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.