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.) 147,549,915
Preserved ejournal titles 37,835
Preserved ebook titles 1,766,222
Preserved files 2,463,310,605
Preserved images 1,456,116,587
Preserved repository-created archival files 307,858,887
Preserved supplied text files 517,545,642
Preserved application-specific files 33,513,507
Preserved multi-file packages 19,736,819
Preserved video files 327,672
Preserved audio files 9,174
Preserved executable files 113