Altmetrics as a research specialty (Dimensions, 2005-2018). El profesional de la información. EPI, 28 (6), 131-148

The scientific literature on altmetrics published from 2005 to 2018 was analysed. The overall structure of the speciality's intellectual landscape is depicted through clusters of co-cited references, analysing journal and author co-citations. The 56,936 references cited in the 8,145 papers of all kinds retrieved from the Dimensions bibliographic database were included in the initial dataset used in the analysis. Pathfinder networks were generated with CiteSpace to determine the most prevalent journals and authors in the speciality. Conceptual structures were identified by co-citation clustering and latent semantic analysis. Open knowledge', altmetric collection', web indicator', assessing research', Research- Gate score', open data citation advantage', Google Scholar author citation', share data', academic tweet', Mendeley readership count' and social media metrics' were observed to be the lines of research presently favoured by specialists. Statistical indicators were calculated to determine the journals and contributors making the greatest impact.