How can I download high quality copies of my purchased Kindle comics now?
I bought several comics from Comixology/Kindle back in the day. In my quest to deDRM all of my Kindle content so I can use it on my Kobo and keep an archival backup, I discovered that the standard deDRM process for books doesn't work well with Kindles. All of my comics ended up with low quality images and 4-6 blank pages between each actual page.
For reference, I downloaded them a few months back using Kindle for PC (the old non-Microsoft Store version), used deDRM_tools, and converted the unencrypted KFX-ZIP files to ePub. Probably not the best way to do it.
Now, I'm trying to redo them all, and since the last time I tried, we now have the Microsoft Store Kindle app and a lot of deDRM methods have been closed by Amazon. Right now, I've downloaded most of my comics using the new Windows 10/11 Kindle app and ran them through deDRM_tools, but haven't gone any further yet. (Some of them refuse to download, saying they're not compatible with the Kindle PC app even though they worked fine with the previous version -- gotta figure that out too.)
I found an older app called comix, which used a python CLI to download the largest quality versions of your Kindle purchases, removed the DRM, and converted them to CBZ. Unfortunately, it's not been updated in 2 years and seems to no longer work since the big DRM changes of June of this year.
My plan this time is currently to use KCC to convert the KFX files into CBZ, since it's supposed to be better for comics than Calibre. I'm worried that's still not going to be the best quality option (and KCC seems to automatically lower the resolution on comics to fit certain devices, but I'd prefer the highest possible quality for archival purposes) and I don't want to put a bunch of work into it again and find myself in a similar situation a few months from now.
Allegedly, the Android and iOS apps can download the highest quality, but there's no way to deDRM those right now. I also do have a physical Kindle device I could potentially use to download and deDRM them. Anyone know of a good way to go about getting max quality versions of your Kindle comics these days?