Invisible Picture Test

The reason for this post is to resolve some difficulties I had with uploading some pictures that are there, but appear as invisible, like the one above.

This is the same picture renamed and uploaded again.

This is uploaded with the “large” setting, instead of the “full size” setting. There are no numbers in the boxes for width and height, though.

This is the same picture after I copied it and pasted it and then reuploaded it.

This is a file upload from someone else.

This is an upload after copying the image to my pc and uploading it.