I ran into that over a year ago, I think. Wing (James) answered and explained the little gotcha of 1 MB max per photo.
I use "Photos" and/or "Preview" on my Mac to export to a smaller JPEG file. Works fine.
One thing I might do is to open an account with one of those photo sharing sites. Any recommendations? Free is best but if the cost is low (ideally less that $50 per year), I'd consider paying for the enhanced features, assuming they exist and are worth it.