The institute has a very large library of 450,000 books and around 3,000 magazines. Much of their material is digitized—very high quality pictures of book and magazine pages which are available on the internet. Many paintings and drawings are also digitized and available on the internet. The institute's website has many pages about artists with information on their life and work. Each artist has their own RKD number. The website also has a thesaurus of words used to describe art and architecture.