Hello,
Pictures you attach to the items in your collection are limited to 500 MB for a regular account. With a premium subscription, the limit is increased to 10 GB: that's about 20 000 pictures (counting 500 KB per picture, which is already quite big or poorly compressed) or 10 000 coins. You can also attach PDF documents like an invoice or a certificate.
Pictures added to the catalogue (the picture at the top of a coin or banknote page in the catalogue) don't count in this quota. Pictures on the forum don't count either.
You can review all the pictures attached to your collection on the following page:
https://en.numista.com/vous/pictures.php
The page is also accessible via the link “Manage my picture storage” at the bottom of the page “My coins”. You'll also see how much space is used and how much space is remaining.
When you remove a picture from an item in your collection or when you upload a picture but you don't save, the picture is still stored on Numista and visible on the aforementioned page with the status “deleted”. You have an option “Empty the trash bin” to permanently delete all such pictures. You can also delete any picture even if it's still attached to your collection. This way you could clear completely your storage space if needed.
