My problem really isn't the image format. I will get Illustrator files that just contain text, and the text has been converted to curves. The file is cut ready, but it would be a 10cm tall by 30cm wide in this font:
Loserboi Grunge Font | dafont.com
There's no way I can cut that font, unless it is fairly large. I would have a hard time cutting Arial that small, but at least it's doable. Even if I could cut it without it being a distorted pile of crap, I wouldn't even attempt to weed it due to the detail. Isn't there something like lines per inch that can be used to describe halftones?