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.) 117,746,420
Preserved e-journal titles 33,650
Preserved e-book titles 1,568,106
Preserved files 1,952,847,303
Preserved images 1,160,878,318
Preserved repository-created archival files 257,525,015
Preserved supplied text files 401,195,584
Preserved application-specific files 30,310,677
Preserved multi-file packages 13,799,721
Preserved video files 202,503
Preserved audio files 7,254
Preserved executable files 107