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.) 125,252,250
Preserved ejournal titles 34,740
Preserved ebook titles 1,660,941
Preserved files 2,079,584,940
Preserved images 1,225,637,241
Preserved repository-created archival files 270,611,248
Preserved supplied text files 446,184,525
Preserved application-specific files 31,300,096
Preserved multi-file packages 15,096,212
Preserved video files 218,723
Preserved audio files 7,784
Preserved executable files 108