import excel file?

i have a collection on ucoin. and i would like an option to import that file here. think also that people that buy a hole collection can import the file, and not having to add 1 by 1

Can't.  

i know, meant f they added the feature, it would be an improvement 

Then you should post in the forum meant for that.  https://en.numista.com/forum/forum15.html or better yet, add your voice to the existing suggestion https://en.numista.com/forum/topic70855.html