Where to upload conference posters and how to share them? When presenting a scientific poster at a conference, I am often asked by colleagues if they can get a copy of the poster. Often, I have DIN A4 prints ready (quite hard to read...) and I am also happy to share them via email, if somebody is interested.

It would all be much easier if I could just upload the poster to some open repository where it is archived such that I just need to share a link.

Neither arXiv seems to be the right place for it, nor figshare. Is there some open repository for scientific posters which I missed so far?
I don't know of any open repository that hosts research posters. But, some conferences do upload a pdf copy of all accepted posters to their website so you can check the venue where you presented your work to see if they offer something similar.

Another option which I see all the time is uploading the poster to your personal website or the website associated with your research group or lab. These websites always have a publications link that usually includes a subsection for poster publications.