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.) 120,683,446
Preserved ejournal titles 34,054
Preserved ebook titles 1,657,157
Preserved files 2,018,734,750
Preserved images 1,195,083,984
Preserved repository-created archival files 263,420,562
Preserved supplied text files 433,783,102
Preserved application-specific files 30,829,126
Preserved multi-file packages 14,426,145
Preserved video files 207,829
Preserved audio files 7,535
Preserved executable files 107