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.
1,474
participating publishers
on behalf of over 2,000 societies and associations
1,318
participating libraries
235
trigger events
45,267
committed ejournal titles
4,604,198
committed ebook titles
377
committed digital collections
71
committed enews titles
Preserved content
| Preserved archival units (articles, books, etc.) | 179,278,992 |
| Preserved ejournal titles | 43,852 |
| Preserved ebook titles | 4,367,284 |
| Preserved files | 3,063,477,507 |
| Preserved images | 1,847,048,328 |
| Preserved repository-created archival files | 373,430,536 |
| Preserved supplied text files | 658,985,774 |
| Preserved application-specific files | 37,497,660 |
| Preserved multi-file packages | 34,559,562 |
| Preserved video files | 1,003,078 |
| Preserved audio files | 34,852 |
| Preserved executable files | 160 |