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.) 130,820,504
Preserved ejournal titles 35,903
Preserved ebook titles 1,728,749
Preserved files 2,184,539,516
Preserved images 1,285,820,477
Preserved repository-created archival files 280,383,344
Preserved supplied text files 465,225,900
Preserved application-specific files 31,718,310
Preserved multi-file packages 16,447,113
Preserved video files 227,370
Preserved audio files 8,067
Preserved executable files 100