Prevent Closing Window is a Firefox extension that displays a Leave Page prompt when users attempt to close the current window. It helps individual Firefox users avoid accidentally losing an active browsing session.
In the Browser DevTools & extensions space, Prevent Closing Window takes a focused approach. Accidentally closing a browser window and losing the current browsing session. It is built as a consumer product for firefox users who want protection against accidental window closure. Prevent Closing Window costs nothing to use. It runs on the web and embeddable surfaces.
jscher2000 builds and maintains Prevent Closing Window, and it first shipped in 2019. Among its 4 catalogued features are Leave Page prompt, window close protection, and accidental close prevention.
Summary written by a language model from the project’s public pages.
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