Preservation Coverage Visualizer


Can also search for releases (eg, individual papers) or containers (eg, journals).
15,247,001
Known Releases
11,058,199 72.53% preserved and publicly accessible (bright)
2,311,068 15.16% preserved but not publicly accessible (dark)
1,877,734 12.32% no known independent preservation


Perpetual Access Coverage by Year



Perpetual Access Coverage by Release Type

Release Type Total Count Coverage
article-journal 13,172,357
article 2,058,832
paper-conference 15,812