Preservation Coverage Visualizer


Can also search for releases (eg, individual papers) or containers (eg, journals).
15,270,632
Known Releases
11,089,555 72.63% preserved and publicly accessible (bright)
2,306,921 15.11% preserved but not publicly accessible (dark)
1,874,156 12.28% no known independent preservation


Perpetual Access Coverage by Year



Perpetual Access Coverage by Release Type

Release Type Total Count Coverage
article-journal 13,195,352
article 2,059,468
paper-conference 15,812