Portico is one of the most comprehensive digital preservation archives; we hold more content than others and have extensive knowledge about the content we preserve, including  an understanding of component file types and formats. The archive is growing daily, and the information below is regularly updated.

participating publishers

on behalf of over 2,000 societies and associations

participating libraries
trigger events
committed ejournal titles
committed ebook titles
committed digital collections

Preserved content

Preserved archival units (articles, books, etc.) 141,087,318
Preserved ejournal titles 38,684
Preserved ebook titles 1,793,551
Preserved files 2,506,364,209
Preserved images 1,510,140,346
Preserved repository-created archival files 303,961,572
Preserved supplied text files 515,811,296
Preserved application-specific files 34,102,755
Preserved multi-file packages 21,282,756
Preserved video files 394,542
Preserved audio files 10,368
Preserved executable files 114