Nearly two dozen journals from two of the fastest growing open-access publishers, including one of the world’s largest journals by volume, will no longer receive a key scholarly imprimatur. In 2022, nearly 100 MDPI journals that have impact factors published more than 17,000 special issues, containing 187,000 articles, according to an unpublished analysis by Paolo Crosetto, an economist at France’s National Research Institute for Agriculture, Food, and the Environment, and Pablo Gómez Barreiro of the Royal Botanic Gardens, Kew. The 19 Hindawi journals delisted by Clarivate represent about one-third of its journals that had been listed in Web of Science