Should I scale my .jpgs and .pngs down to exact dimensions before dropping them into the Canvas email composer, or does Canvas handle the re-sampling for me in the back end?
Also, what are people here using to optimize image file size?
compressor.io is working quite well for us, although ideally we'd have
1. an OS X (rather than a web) app, and
2. a preview-compare-tweak option prior to exporting