The project defines open access journals as scientific and scholarly journals making all their content available for free, without delay or user-registration requirement, and meeting high quality standards, notably by exercising peer review or editorial quality control. DOAJ uses the Budapest Open Access Initiative's definition of open access to define required rights given to users, for the journal to be included, as the rights to "read, download, copy, distribute, print, search, or link to the full texts of [the] articles, or use them for any other lawful purpose".