JabRef offers a Web Search ( F5), where on can choose between things like DBLP or DOI to BibTeX. The DBLP search is a real search returning multiple entires, whereas the latter is a "simple" fetcher for a single entry identified by a DOI.

I propose to move the simple fetchers returning a single entry into "BibTeX -> new entry" as fourth group: "Generate based on id"

Fetcher                  Identifier
[dropdown for fetchers]  [empty field to key in id]

Example

Fetcher                          Identifier
DOI                              10.1145/2578903.2579140

• Move the single-id fetchers away from web search