Best public-domain tools

Free public-domain artwork images from the National Gallery of Art

Historic photographs with free downloads and archival context

Public-domain health symbols with outline and filled artwork.

Free agriculture, food and research photographs

Free art and archive images from Getty’s collections

CC0 artwork images with collection data for reuse

Earth-science images with descriptions and download sizes

Free photos, diagrams, audio and video with individual licences

Public-domain photography with category and keyword discovery

National Park Service photos, video, maps and archives

Explore Dutch art and download museum images

Swedish museum artwork images through several download routes

Official cartographic pictograms, map elements and related web symbols.

A unified map-symbol collection combining standardized and original artwork.

Simple product icons built on a 21-pixel grid.

Volunteer-narrated audiobooks distributed without charge