OK, this is probably more “common sense tip” than “pro tip”, but I was caught napping and wanted to share this, so others like me don’t make the same mistake…
When adding more images under Media for your Products in e-Commerce, add the Alt Text to those images BEFORE, I repeat BEFORE you create variants (sizes, colours etc.). This way the alt text is set for those images under each variant.
If you create variants first, without adding alt-text, you’ll end up having to add the alt-text one by one. To hundreds of images!
OK, I’m off to finish adding the alt-text… only 120 images to go…
FML!