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.
830
participating publishers
on behalf of over 2,000 societies and associations
1,014
participating libraries
138
trigger events
34,804
committed e-journal titles
1,909,580
committed e-book titles
241
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 |