There is a bug in Flatpack versions of Mozilla that prevents the root directory of profiles from being created in the default location.
This makes installing UserChrome, UserContent, Sine, and Sine mods less automated and generally more complicated, or sometimes not at all possible.
You can fix this by instead installing the Tar version of Zen browser, in which profile directories work as expected.
- Go to https://zen-browser.app/download/
- Click 'Download for Linux'
Save the file in a memorable spot, we'll need to know the location later.
- If you use a File Browser, navigate to where the Tar file is saved
- Right-click the file and select 'Extract Here'
- If you use the Terminal,
cdto where the Tar file is saved- Use
tar -xvzf zen.linux-x86_64.tar.xzto extract the Tar file
- Use
- You should now have a new
zenfolder
- Go to
~/.local/share/applications/ - Create a new text file named
zen.desktop - Paste the block below into the file
- Save the file
[Desktop Entry]
Version=1.0
Type=Application
Name=Zen Browser
GenericName=Web Browser
Comment=Experience tranquility while browsing the web without people tracking you!
Exec=
Icon=
Terminal=false
Categories=Network;WebBrowser;
Keywords=Internet;WWW;Browser;Web;Explorer
MimeType=text/html;text/xml;application/xhtml+xml;x-scheme-handler/http;x-scheme-handler/https;
NoDisplay=false
StartupNotify=true
- Download your favoirte Zen icon from here
Save the file in a memorable spot, we'll need to know the location in the next step.
- Open the
Zen.desktopfile - Locate the
Icon=line - Paste the location of the Icon file you downloaded
- Save the file
Here's an example:
Icon=/home/YourUsername/Downloads/Zen-Color-Coral.svg
- Open the
Zen.desktopfile - Locate the
Exec=line - Paste the location of the extracted Zen folder from Step Two
- Add
/zen %Uto the end of the path - Save the file
Here's an example:
Exec=/home/YourUsername/Downloads/zen/zen %U
The first 'zen' in this path is the extracted folder
The second 'zen' in this path is the executible file within the extracted folder
- Run
chmod +x Zen.desktop
Zen browser is now installed, and you can find it in your application launcher.
Sine, Sine mods, UserChrome.css and UserContent.css files will now correctly insatll to your profile's root directory.*
*You can find your profile root directory by going to about:profiles

