Journal rankings quantify a journal's performance using citation data. The original journal ranking scheme is the "Journal Impact Factor" (JIF) produced from citation counts collected from the Web of Science database. Several other schemes developed since then include Eigenfactor, Scimago Journal Ranking (SJR), Source Normalized Impact per Paper (SNIP), and most recently, CiteScore. Most of these subsequent schemes purport to improve upon the JIF by including field normalization into their calculations, however, all of the schemes have weaknesses.
In this section, we focus on two of the journal ranking metrics, CiteScore and JIF, however, we also have a brief selection of other Journal Rankings.