Flatseal: The Must-Have Tool for Managing Flatpak Permissions

Master Flatpak permissions with Flatseal. Get deep insights into your Flatpak apps for improved security on your Linux system.

Flatpak has emerged as a prominent universal packaging format, becoming developers’ and users’ primary and preferred option for cross-platform software distribution. Offering the advantage of sandboxing, Flatpak enhances security by isolating software from the rest of the system.

However, managing the permissions of these sandboxes can sometimes be complex. This is where Flatseal comes into play—a user-friendly tool designed to manage Flatpak application permissions effectively.

The Need for Managing Permissions

While Flatpak automatically sets default permissions that work generally well, specific applications might require access to additional resources, like network interfaces, file systems, or hardware devices.

These permissions can sometimes expose personal data or increase system vulnerability if not managed properly. Hence, understanding and controlling these permissions is crucial for maintaining the integrity and security of your system. Here are a few common types of permissions you might see in Flatseal:

  • Network: Controls whether the app can access the internet.
  • File System: Defines access to files and directories outside of the application’s own sandbox.
  • Devices: Permissions related to accessing hardware like cameras, microphones, or graphics cards.
  • Background: Determines if the app can run in the background.

Introducing Flatseal

Flatseal App
Flatseal App

Flatseal is a graphical utility tool that simplifies the management of Flatpak permissions. With Flatseal, users can review and modify permissions for each installed Flatpak application in a clear and intuitive interface.

Here are the Flatseal’s key features:

  • User-Friendly Interface: Flatseal presents a straightforward, graphical approach to adjusting the permissions of Flatpak applications, making it accessible even for those with limited technical knowledge.
  • Per-app Permission Management: Users can modify permissions per application, providing flexibility and precise control over what resources each application can access.
  • Transparency: It lists all permissions in an easily understandable format, helping users to see precisely what resources each application can access.
  • Revertibility: Changes made through Flatseal can be reverted, allowing users to experiment with permissions without permanent impacts.

Install Flatseal

Installing Flatseal on your Linux system is straightforward and can be done primarily through Flatpak. First, ensure your system supports Flatpak. If not, our comprehensive guide will quickly help you set it up.

Then, use the following command to install Flatseal from Flathub:

flatpak install flathub com.github.tchx84.FlatsealCode language: Bash (bash)
Install Flatseal on Linux.
Install Flatseal on Linux.

After installation, you can start Flatseal from your application launcher, or you can launch it from the terminal with:

flatpak run com.github.tchx84.FlatsealCode language: Bash (bash)

How to Use Flatseal to Manage Flatpak Permissions

Open Flatseal and select an application from the left-hand pane. You will see a comprehensive list of permissions, each accompanied by a toggle switch or other input methods allowing you to enable or disable specific permissions. These permissions include network access, file system access, and hardware access, among others.

To modify a permission, simply toggle it on or off based on necessity and security considerations. For example, if an application doesn’t need to access the Internet, turning off the network access can prevent potential data leaks. Changes are saved automatically as you adjust the toggles or input fields.

After adjusting permissions, use the application as usual to ensure it still functions correctly with the restricted permissions. If something breaks, you can revert the changes easily using Flatseal.

Finally, it’s worth noting that while Flatseal offers an impressive graphical interface, it’s designed for users with a good understanding of Linux system fundamentals.

So, when adjusting permissions on Flatpak applications, ensure you know what you are doing. Setting incorrect permissions can cause applications to malfunction or stop working entirely.


Managing permissions of Flatpak applications is essential to maintaining a secure and stable Linux environment. In light of this, Flatseal offers a powerful yet simple solution, putting control back into your hands.

Using Flatseal to audit and adjust permissions, users can protect their systems from unnecessary exposure and enhance overall security. This makes it a must-have for anyone looking to optimize their use of Flatpak on Linux systems.

Additionally, we highly recommend taking a look at our article about Warehouse, an app manager specifically created for Flatpak. Alongside Flatseal, these tools provide everything necessary to manage Flatpak apps easily and intuitively.

For more information, visit the app’s GitHub repository.

Bobby Borisov

Bobby Borisov

Bobby, an editor-in-chief at Linuxiac, is a Linux professional with over 20 years of experience. With a strong focus on Linux and open-source software, he has worked as a Senior Linux System Administrator, Software Developer, and DevOps Engineer for small and large multinational companies.

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