Auto Shutdown (WebExtension)

Auto Shutdown (WebExtension)

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

Auto Shutdown (WebExtension)
What is Auto Shutdown (WebExtension)?
Auto Shutdown (WebExtension) is a Firefox add-on that activates a specific OS level command once all downloads are completed. It can be used to shut down the computer, put it in hibernate, or even to execute a custom command. A native messaging application must be installed for this extension to work effectively.
By: Sarah Av.
Users: 1,288 ▲ 10
Rating: 2.81 (16)
Version: 0.1.8 (Last updated: 2020-12-19)
Creation date: 2017-03-09
Weekly download count: 15
Firefox on Android: No
Risk impact: Low risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
  • storage
  • nativeMessaging
  • downloads
  • power
Size: 104.80K
URLs: Website
Stats date:

Other platforms

Not available on Chrome
Not available on Edge
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Auto Shutdown extension executes a custom OS level command when all downloading jobs are finished. This extension can be used to turn off computer, hibernate it, or even run a custom command like playing a music song using a desktop application!

For this extension to work, a native messaging application needs to be installed. For more info please visit

To report bugs use:

User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Useful add-on that works well on some systems
  • Author typically responds quickly
  • Ability to set a timer to close Firefox
  • Not straightforward to install, requiring additional software
  • Some users experiencing non-response or error messages after countdown
  • Confusing or unclear commands
  • Support and tutorial materials are not helpful or tailored to Firefox
  • Non-responsive author for some users
Most mentioned
  • Issues with installation and setup
  • Errors or non-functionality after countdown
  • Need for clearer instructions or support materials
  • Inconsistent feedback on author support
  • Desire for more user customization options
Recent reviews
Works flawlessly on my W10 machine.
by Tobiáš, 2023-11-28
View all user reviews
Risk impact

Auto Shutdown (WebExtension) is relatively safe to use as it requires very minimum permissions.

Risk likelihood

Auto Shutdown (WebExtension) has earned a fairly good reputation and likely can be trusted.

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