The core of the Portal of Croatian Technology Heritage is Croatian Encyclopaedia of Technology, which is conceived in parallel as a printed and an online edition. It was initiated in 2014, and contains approximately 1.620 articles (in 2021 approximately 350 new articles were added), which are enriched with a set of metadata and links to the external content-related sources . In 2021 the webiste got in total 149.000 visits and 233.775 pageviews. The percentage of visits excluding Croatia (75,62%): Bosnia and Herzegovina 7.6%, Serbia 4.4%, Germany 2% , Slovenia 1.6%, etc.