K4 How to view 600x800 fullscreen images?

[dryes]

hi,
i made a bunch of test images for different fonts and font sizes. Now I want to see them in native resolution of 600x800 on my rooted and KUALed K4.

What I tried:
zip them in documents folder:
fullscreen in amazon reader seems to add margins.
Didn't find a fullscreen setting in KOReader

could use Screen Saver Hack but I really want to be able to navigate the pictures with the buttons.

From what i can gather it shouldn't be that hard to just create a program that uses eips.
Is eips able to draw PNGs using the full screen without margins on K4?
Has anyone already made such a program that I missed?

If not I think I'm able to hack one together but might need further help as I haven't really looked into making apps for KUAL.

If anyone is interested I attached the test images. all fonts are monospaced and free for personal use, only some are free for commercial use. the fontmode is used in the python library pillow

[bugmen00t]

Have you tried uploading the zipped images to "Pictures" folder instead of "documents"?

[Piecho]

Or you can create Zip with them and rename it to .cbz. In Koreader without margins should be full screen

[jackm8]

Originally Posted by Piecho

Or you can create Zip with them and rename it to .cbz. In Koreader without margins should be full screen

Correct. It's also possible to make a pdf out of them, or convert that pdf into kfx and run it in Kindle's native reader. That one doesn't have margins.