First of all, thank you so much for creating this beautiful image viewer Honeyview.
I love the aesthetically pleasing borderless feature of Honeyview.
The settings "Adjust window size to image size"
and "Fit in Window"
work perfectly together. But there are two cases when the window doesn't adjust entirely to the image being displayed
(1) Images higher than 1080 pixels cause two black areas on the sides.
The attached sample is from an image with the original height of 2500 pixels.
(2)
Images shorter than 100 pixels
cause two black areas at the top and the bottom.
The attached sample is from an image with the original height of 60 pixels.