Uhg, what is the no-nonsense Linux image viewer these days? Everything I try has one or more of:

- Buttons which delete or modify the file you're looking at. WTF, no. I want to view images, not worry I'm going to misclick and perform some destructive action.

- Its own ugly UI chrome replacing rhe title bar.

- Screen space wasted on buttons, thumbnails, etc.

OK, back to where I started: xfce's Ristretto. The only problems with it were the delete button and some wasted screenspace, but I realized the view menu has a toggle to turn of fthe toolbar (with the delete button) entirely, and lets you reposition thumbnails.

As usual, the no-nonsense desktop apps come from xfce.

The unwanted "delete" function is still available on menu and keyboard shortcut.

I think I actually have a good solution for this though:

Running whatever image viewer I want to use under a variant of my usand.sh that uses Linux namespaces to make all but a limited part of the filesystem read-only. Currently this isn't possible, as it blocks access to the X server unix socket from the host and to the network, but I've been planning to extend it to be more flexible anyway.