How does an AppImage work?

Remember, an AppImage is an application you simply download and run. Anyone can build an AppImage, proclaim it a must-have piece of software, roll something nefarious into it, and make it available for download. Users then download that AppImage, give it executable permission, and run it.

What is a AppImage file?

An AppImage is a type of cross-distribution packaging (or bundling) format. It is essentially a self-mounting (using Filesystem in Userspace, or FUSE for short) disk image containing an internal file system for running the application it provides.