Improving the quality of online journals: Follow-up study of Elsevier's backfiles image rescanning project

► A previous study analyzed image quality in an Elsevier journal backfile package. ► 73.6% of the issues had at least one figure with unacceptable quality. ► Subsequently, an Elsevier algorithm identified problem images, which were rescanned. ► A follow-up study determined the effectiveness of the project. ► Although the project corrected many problems, other problems remain.