Vector illustrations are very popular among customers. The main reason for this is that they can be upsized indefinitely without losing quality.
Vector file formats Mostphotos supports are: .eps8, .eps10 and .ai.
Vector + side jpg
In .eps10 and .ai files iptc data can be embedded directly in the files, but in old .eps8 that is not possible. The solution is to:
1) Export a side .jpg of your vector image where you embed iptc tags in.
2) Each file must be named exactly the same, character for character, except for the extension. For example:
3) Upload it to the ftp, in the folder that is called vectorimages
Contact email@example.com if you have any more questions or need any help.