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 e-journal titles
committed e-book titles
committed digital collections

Preserved content

Preserved archival units (articles, books, etc.) 117,161,766
Preserved e-journal titles 33,165
Preserved e-book titles 1,522,870
Preserved files 1,902,628,511
Preserved images 1,130,114,903
Preserved repository-created archival files 253,391,080
Preserved supplied text files 397,198,533
Preserved application-specific files 30,017,126
Preserved multi-file packages 13,294,813
Preserved video files 197,921
Preserved audio files 6,920
Preserved executable files 107