I got a note from a reader detailing her frustration at trying to upload a head shot picture of a presenter in her web conferencing product. She kept trying and the upload kept failing.
After some back-and-forth with a tech support representative, it turned out she was uploading a picture with dimensions larger than the product accepted for that particular placeholder. The really annoying part was that she had checked the online documentation for just such a restriction. But the documentation was wrong.
I have run into similar situations with many different products. I wish web conferencing vendors would always add these items to their upload pages:
On the upload page, clearly state the maximum size graphic (pixels and/or bytes) that can be uploaded. Do NOT make us access a separate help system and search for the applicable page of documentation.
Show us what is currently uploaded for use in that spot.
Give us a way to delete/clear the graphic rather than replacing it.
Additional information is also appreciated, although it does not need to be on the upload page itself. You can put these items in a separate help item (I prefer context-specific help that can be clicked for the upload item in question):
Tell us if a particular aspect ratio is preferred (square/portrait/landscape). Or tell us the WxH dimensions the graphic is displayed as if appropriate.
If you crop/shrink/expand uploaded graphics to fit a placeholder size, tell us how you do it. Are large images cropped, or are they shrunk? Do you expand small images to fill the space, or do you add white filler around them, or do you keep them at the uploaded size without adding additional filler color around them?
These may seem like trivial details, but your users have neither the time nor inclination to do trial and error experimentation to see what happens with various graphic sizes. Let us know what the product needs so that we can create the most appropriate graphic for that space and do it right the first time.