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.) 107,511,783
Preserved e-journal titles 32,049
Preserved e-book titles 1,455,007
Preserved files 1,816,319,805
Preserved images 1,107,091,691
Preserved repository-created archival files 237,305,273
Preserved supplied text files 371,283,515
Preserved application-specific files 29,576,895
Preserved multi-file packages 12,587,655
Preserved video files 190,943
Preserved audio files 5,956
Preserved executable files 106