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.) 118,304,708
Preserved ejournal titles 33,751
Preserved ebook titles 1,598,359
Preserved files 1,969,623,330
Preserved images 1,170,170,696
Preserved repository-created archival files 258,586,601
Preserved supplied text files 403,505,031
Preserved application-specific files 30,432,299
Preserved multi-file packages 13,965,893
Preserved video files 203,651
Preserved audio files 7,326
Preserved executable files 107