I use Blot.im for my blog. I’ve got a shortcut that resizes and uploads an image to the appropriate Dropbox folder, gets the file name and file extension and creates a markdown image link that is copied to the clipboard. Currently, I have to upload images one at a time because I can’t figure out how to get Shortcuts to create a markdown link for each individual image when uploading multiple images.
Here is a link to the shortcut. https://www.icloud.com/shortcuts/3c4a95b9f711448b85bdb4aef1aaaa7a