Phototonic vs qimgv
When comparing Phototonic vs qimgv, the Slant community recommends qimgv for most people. In the question“What are the best FOSS image viewers for UNIX-like systems?” qimgv is ranked 1st while Phototonic is ranked 15th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Clean and functional UI
Beside being pretty clean and easy-to-use, the UI is also pretty fast.
Pro Can be easily keyboard driven
Lots of pre-defined keyboard shortcuts.
Pro Highly customizable
Lots of options to personalize your experience. You can set Photonic to fit images by width and height, or width or height; rotate according to Exif orientation; show/hide image name in viewer; adjust space between thumbnails; adjust delay between slides.
Pro Simple UI
Pro Fast and lightweight
Pro Can support video playback
Experimental feature via libmpv.
Pro Customizable shortcuts
Can use a variety of short-cuts which can be customized.
Pro Beautiful
Pro Open-Source/Libre
Pro Supports Linux and Windows
Pro Ability to run shell scripts
Pro Plugin support
Can extend/add features by downloading or writing your own plugins.
Cons
Con No Dark mode
And not a lot of customization available.