New York City's Center for Jewish History is contributing more than 600 high-resolution artworks to the Google Art Project.
Highlights include paintings and works on paper that survived the Holocaust and portraits of Sigmund Freud.
The Google Art Project is part of the Google Cultural Institute. It uses technology to put art, archives, heritage sites and other cultural material online.
To date, it has more than 40,000 objects. Viewers can browse works by the artist's name, type of work, museum, country, collections and time period.
The Center for Jewish History is home to the American Jewish Historical Society, Yeshiva University Museum and other Jewish organizations.
Other institutions that have contributed to the site include the Museum of the City of New York and the Museum of the Moving Image.