IMHO using
Perfect Viever is better idea than converting images for KDHX.
Our
Kindle Comic Converter have KDHX output profiles too but I'm not convinced that this model need any conversion. If you will try KCC I have two tips for you:
- Disable
High/Ultra quality as high quality zooming is not needed on machine with this resolution.
- Enable
Strech/Upscale if you want images use full screen. I'm quite sure that your source images are smaller than KHDX resolution.