I think this question won’t matter to 95% of you who read this, but the remaining 5% still care deeply.
My question is: do you still use MOBI files for sideloading onto your Kindle device?
I ask because I am wondering if it is still necessary to add MOBI files to my Payhip store. As those of you who buy direct from my Payhip store know (thanks everyone!), you get your choice of file formats – EPUB, MOBI, and PDF. However, MOBI is out of date. For a long time, Amazon used MOBI and everyone else used EPUB, but a few years ago Amazon decided that maintaining its own proprietary ebook format was a waste of resources, and switched the Kindle over to EPUB. Recently, Amazon stopped allowing MOBI files in its Send To Kindle service. There was some sturm and drang about this online, but to be honest it is a trivial problem, since converting MOBI to EPUB is quite straightforward. You can do it in a free program called Calibre.
That long-winded introduction aside, this summer was my Super Summer Of Finishing Things when I concluded SHIELD WAR, STEALTH & SPELLS, and GHOST ARMOR. As I start on a new series, I wonder if it still necessary to include MOBI files on my store.
Let me know if you still need MOBI files!
-JM
Published on August 24, 2025 05:37