Prevent Closing Window

Name: Prevent Closing Window
Rating: 3.7 (10 reviews)
Author: jscher2000

By: jscher2000

Displays the "Leave Page" prompt to avoid accidentally closing the current window. **BUG** To allow Firefox to shut down, click Stay on page and the Close This Tab button before you exit.

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Features & Capabilities

Prevent Closing Window is a Firefox extension designed to safeguard your browsing sessions by prompting a confirmation before closing tabs or windows. By activating its protection options, users receive a "Leave Page" prompt whenever they click the close button, helping to avoid accidental closure of important data or tabs.

This extension adds a customizable tab that can be enabled in regular windows, private windows, or both. It offers user-friendly options accessible from the Add-ons page, allowing tailored protection preferences. Note: To fully close Firefox, users should select "Stay on page" and then use the "Close This Tab" button as described due to a known bug. Prevent Closing Window ensures better control over your browsing experience by preventing unintentional tab or window closures.

User Growth & Download Statistics

Add-on Privacy & Security

By:

jscher2000

Daily users:

Rating:

3.70

(10)

Version:

1.0 Last updated: 2020-09-19

Version code:

5101388

Creation date:

2019-01-05

Risk:

Permissions:

Size:

41.69KB

Email:

js*****@outlook.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-03

Compare stats and ranking:

Ranking

# 15,097 ▼ 55

Other rankings

#6 in prevent keyword 38 #56 in event keyword 21 ▼ 3#62 in present keyword 31 ▼ 1#114 in close keyword 21 ▲ 2#146 in windows keyword 40

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

jscher2000

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/prevent-closing-window/

Email:

js*****@outlook.com

Website:

https://github.com/jscher2000/Prevent-Closing-Window/

User Reviews

by 远离*****, 2025-04-17

by 全民*****, 2025-03-12

The Extension Works But It's Annoying That The Tab Auto Opens In The Startup And When You Open A New Tab In A Second Window

by Se*****, 2024-05-29

View all user reviews ›

Is Prevent Closing Window Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Prevent Closing Window requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Prevent Closing Window has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
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