BHL to Wikidata

A tool by Rod Page, code on GitHub

This tool is inspired by SourceMD and works in much the same way. Enter one or more DOIs, one per line. The tool checks whether the DOIs already exist in Wikidata, if not it will create Quickstatements for them so you can add them yourself.

There is also another tool, Cites Works which adds citation links to works with DOIs.