Basically it’s a HDR image viewer. The only one I’ve found to be good enough on Linux. All of the other image viewers that ship by default on distros are basically garbage.
I’ve asked Alan Pope to make a snap for that app a year or two ago and thank heavens he made it as there are literally no packages for this app.
I see now tho that there hasn’t been any new development (not that it needs any, it’s a pretty complete app) so idk if any of you are familiar with it or wanna take a look at it? Does it offer any value to your own projects? It’s BSD licensed.
https://bitbucket.org/wkjarosz/hdrview/src/master/