Preservation Coverage Visualizer


Can also search for releases (eg, individual papers) or containers (eg, journals).
16,405,168
Known Releases
11,337,680 69.12% preserved and publicly accessible (bright)
2,302,988 14.04% preserved but not publicly accessible (dark)
2,764,500 16.86% no known independent preservation


Perpetual Access Coverage by Year



Perpetual Access Coverage by Release Type

Release Type Total Count Coverage
article-journal 13,926,007
article 2,463,349
paper-conference 15,812