To insert any type of file—including an image, video, or document—into the body of a Paper doc, you can simply drag and drop it in, as long as it's under 50 MB.
To drag a file into a Dropbox Paper doc:
- Open the desired Paper doc.
- Drag any file into that doc. A blue line will appear to help you place it.
Your file will automatically upload to a folder in your Dropbox called Paper Uploads. Dropbox will then create a link to that file and paste it into your Paper doc.