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.) 123,723,519
Preserved ejournal titles 34,246
Preserved ebook titles 1,667,474
Preserved files 2,037,161,416
Preserved images 1,201,417,612
Preserved repository-created archival files 266,761,690
Preserved supplied text files 438,502,752
Preserved application-specific files 30,919,385
Preserved multi-file packages 14,539,651
Preserved video files 208,766
Preserved audio files 7,545
Preserved executable files 107