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.) 116,170,343
Preserved e-journal titles 32,963
Preserved e-book titles 1,508,802
Preserved files 1,886,534,043
Preserved images 1,124,696,218
Preserved repository-created archival files 251,612,693
Preserved supplied text files 394,715,224
Preserved application-specific files 29,895,004
Preserved multi-file packages 13,156,775
Preserved video files 196,586
Preserved audio files 6,907
Preserved executable files 107