Preservation Coverage Visualizer


Can also search for releases (eg, individual papers) or containers (eg, journals).
16,165,481
Known Releases
11,176,667 69.14% preserved and publicly accessible (bright)
2,353,938 14.57% preserved but not publicly accessible (dark)
2,634,876 16.3% no known independent preservation


Perpetual Access Coverage by Year



Perpetual Access Coverage by Release Type

Release Type Total Count Coverage
article-journal 13,688,423
article 2,461,533
paper-conference 15,525