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.) 116,076,416
Preserved e-journal titles 32,273
Preserved e-book titles 1,480,316
Preserved files 1,858,551,958
Preserved images 1,115,723,846
Preserved repository-created archival files 246,892,862
Preserved supplied text files 388,295,734
Preserved application-specific files 29,744,442
Preserved multi-file packages 12,837,080
Preserved video files 194,171
Preserved audio files 6,139
Preserved executable files 106