Thanks for the suggestions. However, they all have issues:
xli - doesn't support zooming with mouse wheel
xloadimage - doesn't support zooming with mouse wheel
geeqie - has UI rendering issues (not all text visible); uses dbus
gthumb - uses dbus
mirage - core dumped on me (Ubuntu 22.04 package, remote X session)
display - doesn't support zooming with mouse wheel
My images are usually too large to fit on a screen 1:1, so zooming is essential.
I just tried. It starts with the wrong aspect ratio. I can fix it by pressing "a". And "." and "," can be used for zooming. But a major drawback for me is that on Ubuntu I need to use snap to install it. Also, I have to set the XAUTHORITY variable to make it work over a remote X11 connection.
Surprised noone has mentioned sxiv, it is brilliant in (I guess) the same way people like xterm.
Really minimalistic but at the same time quite powerful under the hood. All normal operations have quick vim-inspired shortcuts (and scroll to zoom) and if you want to get advanced you can trigger scripts to do some heavy-lifting.
Not for everyone but when it fits it is brilliant.
If sxiv isn't your thing and you want something minimalistic, maybe have a look at feh (don't know if it has scroll to zoom).
Ok, I tried sxiv. It works locally, but when I invoke it over a remote X11 connection, I get a blank screen.
I also tried feh. It simply hangs when I invoke it with a png file over a remote X11 connection.
If you are starting to wonder whether there is something wrong with my setup: I can run other applications like xterm, xeyes, gimp, just fine over a remote X11 connection.
Do you have an indexed color display instead of a truecolor display or something? In that case it would make sense that modern programs have problems with it while older programs work. What does “xdpyinfo” say?
