Since I don't presently use Dropbox, this subject header is a question..
https://www.howtogeek.com/fyi/dropbox%E2%80%99s-upcoming-extensions-update-will-add-more-file-editing-support-including-pixlr-photosInterested in the editing features in Pixlr Photos and being able to upload finished/edited photos.
Rgds,
Ed