Newbies may be confused on how to use the appimage file. Here is a useful (and easy) walk-through.
Thank you, but appimage is a general Linux concept, not specific to Synfig.
Since the first time it was available under this post: https://morevnaproject.org/2016/12/23/synfig-studio-appimages-now-available-download/ it was a link to explain this concept (by David Revoy)
And from https://github.com/synfig/synfig (README.md) you need just 2 lines to know what to do
Installing
Debian/Ubuntu
- Download the appimage file from the website.
- Left-click on the file and select
properties
. Navigate topermissions
and check the box that saysAllow executing file as program
. Finally, run the file.
For more information see https://discourse.appimage.org/t/how-to-make-an-appimage-executable/80
This information needs to be on your download page. Not everyone is knowledgeable of these things.