Since somebody asked in another thread about the possibility to convert parts of a HTML document to Markdown including links etc.: I fiddled around a bit and came up with this bookmarklet:
It takes the currently selected part of a web page, converts it to Markdown (using the turndown library) and copies the result to the clipboard.
This should (!) work in all browsers, not only Safari. And it does not rely on DT’s services, either. It is not overly tested, though.
The obvious disadvantage is the reliance on an external library for the conversion to MD. But hey, why invent the wheel again?
For installing the bookmarklet in Safari: see here. Other browser should work similarly.