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.) 135,334,300
Preserved ejournal titles 36,255
Preserved ebook titles 1,607,491
Preserved files 2,249,996,808
Preserved images 1,323,283,694
Preserved repository-created archival files 286,113,479
Preserved supplied text files 476,801,782
Preserved application-specific files 32,170,246
Preserved multi-file packages 17,037,817
Preserved video files 240,054
Preserved audio files 8,338
Preserved executable files 100