It is also possible to upload design directly from Dropbox. Just choose the option to upload a design from Dropbox in this menu in our web manager:
The Dropbox chooser will instantly appear and you just have to choose which file you'd like to import.
This is just a first version of our Dropbox integration and we plan to improve this feature. If you want us to improve this feature, please upvote it so we know what to prioritize.