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.) 120,519,230
Preserved ejournal titles 33,958
Preserved ebook titles 1,630,873
Preserved files 2,008,316,864
Preserved images 1,190,056,599
Preserved repository-created archival files 262,401,581
Preserved supplied text files 408,477,638
Preserved application-specific files 30,722,577
Preserved multi-file packages 14,288,128
Preserved video files 207,095
Preserved audio files 7,421
Preserved executable files 107