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Varethane's Master List of Printers

This is a big post compiling all the printers of books, prints, and other popular comic-related merch that I (Varethane) have either worked with or heard recommended by other indie creators! I’ve noted where each printer is based, but everything on this list should offer international shipping as well (if any do not, please let me know and I can mark it as such or remove it from the list).
There are a lot of different categories for this subject so I’ve tried to split them up in a way that makes sense to me, though if anyone reading this has suggestions for changes I could make please feel free to suggest away!
This sort of thread is most useful if it’s being continuously edited and updated to reflect more companies and resources (or to take them off, should they close their doors for whatever reason). And of course, if you know more printers or have more information on any of the ones listed here, please let me know! (Or for those of you with editing capabilities I guess you could just add them).
This post originated on the SpiderForest Webcomic Collective forums
The How and Why of Webcomic Retcons

If you make a webcomic for a few years, you (hopefully!) improve so much that it can be impossible to look at your archives the same way again. Lineart, understanding of flow and panel layout, speech bubble placements… sometimes your archives tells a more interesting story about how far you’ve come as an artist than the actual plot of the comic. It can be beautiful… but also lead to some really awkward beginning pages that could do with an edit pass.