Perhaps you could just modify the javascript on the project I linked so that it will paste into the part of the DOM you wish to target (qq-upload-drop-area?), then put the javascript into a
bookmarklet? Also, it does look like that code could be used as a DokuWiki plugin.
I prefer to use Firefox so my current (bodgy) solution to the problem of quickly adding images from webpages is a bash script that: takes a script parameter for the media path; scrapes the URL from the clipboard; runs a ssh command which parses the pasted image URL (converts upper-case to lower-case and substitutes underscores for spaces) as a
-O parameter for wget; wgets the image; and finally, chowns the image. Not very elegant or efficient, so I'd appreciate it if you posted your progress (
Dear intertubes, please do my homework for me (??)).