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.) 128,014,283
Preserved ejournal titles 35,432
Preserved ebook titles 1,679,230
Preserved files 2,133,710,599
Preserved images 1,256,582,995
Preserved repository-created archival files 275,379,425
Preserved supplied text files 456,402,378
Preserved application-specific files 31,372,617
Preserved multi-file packages 15,657,266
Preserved video files 223,431
Preserved audio files 7,929
Preserved executable files 100