Auto Shutdown (WebExtension)

Name: Auto Shutdown (WebExtension)
Rating: 2.6667 (18 reviews)
Author: Sarah Av.

By: Sarah Av.

Shutdown, hibernate, restart, suspend, or run a custom command when all downloads are finished

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Install

Features & Capabilities

Auto Shutdown is a versatile Chrome extension designed to automate your computer's power actions once all downloads finish. Whether you want your PC to shutdown, hibernate, restart, suspend, or execute any custom OS-level command, this extension handles it seamlessly.

To enable these features, a native messaging application must be installed on your device. This powerful tool can also be used creatively, such as playing a music track via a desktop application once downloads complete. For installation instructions and further details, visit the official page linked below. Report bugs or contribute via the GitHub repository.

User Growth & Download Statistics

Add-on

By:

Daily users:

Rating:

Version:

0.2.1 Last updated: 2025-01-13

Version code:

5874546

Creation date:

2017-03-09

Risk:

Permissions:

Size:

92.52KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-10

Compare stats and ranking:

Ranking

# 3,404 ▼ 16

Other rankings

#301 in Download Management ▼ 3

#35 in commands keyword 10 ▼ 1

#41 in command keyword 7 ▼ 1

#49 in auto keyword 72 ▼ 1

#95 in extension guard keyword 50

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For Developers

Monetize with App Pass Boost with Extension Booster

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:

Sarah Av.

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/auto-shutdown-webextension/

Website:

https://add0n.com/auto-shutdown.html

User Reviews

Reviews are mixed: some users report it works on Windows 10 and provides a useful timer-based shutdown; others struggle with setup, reliability, and unclear configuration. The main positives are Windows 10 compatibility and the core countdown/shutdown function; the main drawbacks are the native client installation burden, occasional non-functionality, unclear commands, path/config errors, and limited event customization. Overall, it can be effective with careful setup but has notable reliability and usability hurdles.

Pros

Works on Windows 10 (positive experiences reported).
Provides a countdown/timer to trigger shutdown/restart actions.
Useful addon for automated shutdown tasks.
Updated to a WebExtension to support newer Firefox versions (FF57+).

Cons

Requires native client and a non-trivial installation process.
Reliability issues; some users report it doesn't work on their system (e.g., Windows 10 Home).
Commands and setup instructions are unclear or confusing (e.g., 'CALL:PowrProf.dll SetSuspendState 0 1 0').
Path/config issues in the options page and misleading 'Check connection' page; debugging is hard.
Limited customization of restart events; only certain events trigger actions, with no option to customize.

Recent reviews

after installing the native application, install the extension & close Firefox immediately afterwards. Reopen it and enjoy

by Fi*****, 2026-03-01

by 敬念*****, 2025-04-06

by 远离*****, 2025-02-10

View all user reviews ›

Is Auto Shutdown (WebExtension) 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.

Auto Shutdown (WebExtension) requires very minimum permissions.

Risk impact analysis details

Medium Facilitates communication between extensions and native applications, usually low risk if managed correctly.
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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.

Auto Shutdown (WebExtension) is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

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