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.) 138,496,694
Preserved ejournal titles 36,748
Preserved ebook titles 1,618,737
Preserved files 2,308,743,009
Preserved images 1,364,459,492
Preserved repository-created archival files 290,055,950
Preserved supplied text files 486,931,061
Preserved application-specific files 32,371,461
Preserved multi-file packages 17,362,161
Preserved video files 242,121
Preserved audio files 8,408
Preserved executable files 100