AppImage packages an entire application — dependencies included — into a single file that runs on any Linux distribution. There’s no installation step, no root access required. You download the file, make it executable, and run it. This guide covers the required FUSE dependency, both the file manager and terminal methods, desktop integration, and how to fix the most common errors.
Install the FUSE Library Before Running AppImage on Ubuntu
Ubuntu 22.04 and 24.04 don’t ship with the FUSE library by default. AppImages mount themselves as virtual filesystems using FUSE, so the library must be present before any AppImage will run. The package name depends on which Ubuntu version you’re on. If you’re not sure, you can check your Ubuntu version from the terminal before continuing.
On Ubuntu 22.04:
sudo apt install libfuse2On Ubuntu 24.04:
sudo apt install libfuse2t64The library is the same — only the package name changed between releases. Running either command on a system that already has FUSE installed does nothing harmful.
How to Run AppImage on Ubuntu via File Manager
This approach works entirely without a terminal after the FUSE install.
Download the AppImage File
Go to the official website of the software and download the .AppImage file. The Downloads folder is fine temporarily, but a dedicated ~/Applications directory keeps things cleaner. AppImages are fully portable — moving the file later has no effect on how it runs.
Grant Execute Permission
Downloaded AppImage files are not executable by default. Right-click the file, select Properties, open the Permissions tab, and enable “Allow executing file as a program.” Without this step, the file won’t open regardless of whether FUSE is installed.
Launch the AppImage on Ubuntu
Double-click the file. The application opens directly with no installer or setup wizard. Some file managers also show a Run option in the right-click context menu.
How to Install AppImage on Ubuntu via Terminal (CLI)
The terminal method is better for automation, headless systems, or when you prefer not to use a GUI.
Create a Directory and Download the File
mkdir -p ~/Applications && cd ~/Applications
wget https://download.electrum.org/4.6.2/electrum-4.6.2-x86_64.AppImageReplace the URL with the actual download link for your chosen application. If wget isn’t available, the page on fixing wget command not found errors on Linux walks through the installation.
Make the AppImage File Executable with chmod
chmod +x electrum-4.6.2-x86_64.AppImageThis sets the execute bit without needing sudo. Run ls -l afterwards to confirm the x flag appears in the permission string. The full chmod execute permissions reference covers how to apply per-user or per-group restrictions if needed.
Run the AppImage
./electrum-4.6.2-x86_64.AppImageTo run it in the background and keep the terminal available:
./electrum-4.6.2-x86_64.AppImage &AppImage vs APT vs Snap on Ubuntu
| Feature | AppImage | APT | Snap |
|---|---|---|---|
| Root access required | No | Yes | Yes |
| Works across all distributions | Yes | No | Partial |
| Auto updates | No | Yes | Yes |
| App launcher integration | Manual | Auto | Auto |
| Depends on package manager | No | Yes | Yes |
Steps to run an application (fewer = simpler)
Relative complexity based on required steps from download to running the application
Add AppImage to the Ubuntu Application Menu
AppImages don’t register with the system and won’t appear in the launcher on their own. To add one manually, create a .desktop file at ~/.local/share/applications/. A basic template looks like this:
[Desktop Entry]
Name=YourAppName
Exec=/home/username/Applications/YourApp.AppImage
Icon=/home/username/Applications/YourApp.png
Type=Application
Categories=Utility;Save the file and the application appears in the launcher alongside other installed software. The icon path can point to any .png file, or you can extract an icon from inside the AppImage itself using --appimage-extract.
Fix AppImage Not Running on Ubuntu
FUSE Library Missing Error
If you see the message dlopen(): error loading libfuse.so.2, FUSE is not installed. Run the appropriate apt install command for your Ubuntu version (see the section above) and try again.
Permission Denied Error
This means the execute bit was never set. Run chmod +x filename.AppImage or use the Properties dialog in your file manager. After setting the permission, the file will run normally.
Some Electron-based applications fail with a sandbox error. Run the file from the terminal with the --no-sandbox flag:
./application.AppImage --no-sandboxFAQs
Does AppImage work on Ubuntu 24.04?
Yes. Install the FUSE library first with sudo apt install libfuse2t64, then make the file executable and run it. The package name differs from Ubuntu 22.04, which uses libfuse2 instead.
Where should I store AppImage files on Ubuntu?
Anywhere works — AppImages are portable. A dedicated ~/Applications folder keeps them separate from Downloads and reduces the chance of accidental removal during routine cleanups.
How do I update an AppImage on Ubuntu?
Download the newer version from the official source and replace the old file. Some applications include a built-in update checker, but support for this varies by developer.
Can I run AppImage without root access on Ubuntu?
Yes. AppImages need no root access at runtime. The only command that requires sudo is the one-time FUSE library installation via apt.
Why doesn’t my AppImage appear in the app launcher on Ubuntu?
AppImages don’t self-register with the system. Create a .desktop file in ~/.local/share/applications/ pointing to the AppImage path. The desktop environment reads it and adds the entry to the launcher.
Willie has over 15 years of experience in Linux system administration and DevOps. After managing infrastructure for startups and enterprises alike, he founded Command Linux to share the practical knowledge he wished he had when starting out. He oversees content strategy and contributes guides on server management, automation, and security.