Printing JPEG files to Epson XP-400 printer

So I was trying to print out my tickets for the Rockstar Mayhem concert when the Windows machine I was trying to use stalled.

http://rockstarmayhemfest.com/dates/phoenix-az-2

So I used Fedora on my laptop to save the day.

I couldn't get the pdf ticket files to print on the networked Epson XP-400.

Instead, I loaded them into GIMP and exported them to JPEG format.  Unfortunately, that didn't work.


In the Epson printer manual,
(https://files.support.epson.com/pdf/xp400_/xp400_ug.pdf )
it says:

You can insert memory cards in your product containing files that meet these specifications.

File format JPEG with the Exif version 2.3 standard Image size 80×80 pixels to 9200×9200 pixels

Number of files Up to9990

So I re-exported them and made sure they were in unoptimized uninterlaced format JPEG.  That worked, they were recognized.

So convert PDF to raw JPEG, and load them onto an SD ram card and you can get the printer to print out pages.