What was more frustrating for me was the fact that the size limit isn't reported anywhere (not anywhere obvious, anyway) and that Jerboa did not cleanly handle the error, so I had to eventually retry on desktop to realize it was an image size issue. Neither of these things are lemm.ee's fault

As a web developer, I can appreciate being hesitant about hosting images, for a brand new service that probably currently exists on just one server somewhere. Text is miniscule when it comes to size, but images can balloon quickly, and I don't know what the protocol would be (if any) for a Lemmy instance to delete images to reclaim space, in a way that wouldn't cause problems.

Yeah the size is frustrating. I asked for an easy way to find image upload limits on my home instance and was met with thunderous silence. I had to keep compressing further and further until I finally found a size it liked.

If you have issues with images not uploading consider using a 3rd party service to host your images instead of your Lemmy instance.

I just upload my images and videos to Catbox.moe and use the direct link it gives me to post my memes and videos I share. Also doing this with your images helps save server resources on the Lemmy servers.