PubMed is a valuable tool for searching the biomedical literature, but it can be hard to determine which of a long list of results are likely to be the most important or the most credible. Eigenfactorizer is a free plugin for the Chrome browser that color-codes the results of your pubmed search results according to the Article Influence score of the journals in which they appear. Using this tool, it is easy to quickly filter search results visually. Because of data usage restrictions, Eigenfactorize does not use the standard Article Influence scores based on the Thomson-Reuters JCR data. Instead, the tool uses Pubmed-Article Influence scores, which are calculated using the Pubmed Central citation network of 16 million citations in the biomedical sciences.

To download and install the plug-in, visit the Eigenfactorizer page at the Chrome Web Store.