Troubleshoot
Fixes for the problems people hit most with Super Preview, from installing on Windows and Linux to files that open as plain text.
Where to get help
Section titled “Where to get help”Stuck, or found a bug? Email support@superpreview.app. Say what you did, what you expected, and what happened instead.
Windows says the file is not safe
Section titled “Windows says the file is not safe”The Windows files are not code-signed yet, so SmartScreen shows a warning. Click More info, then Run anyway.
The AppImage won’t start on Linux
Section titled “The AppImage won’t start on Linux”An AppImage needs libfuse2. On Debian and Ubuntu, install it with
sudo apt install libfuse2, or libfuse2t64 on Ubuntu 24.04.
Without it, start the app with
APPIMAGE_EXTRACT_AND_RUN=1 ./FILE.AppImage.
A file opens as plain text
Section titled “A file opens as plain text”Super Preview shows a file it has no view for as plain text, if it looks like text. A file that doesn’t shows “Can’t show this yet”.
Known limitations lists the kinds of files that don’t have a view yet.