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.
1,100
participating publishers
on behalf of over 2,000 societies and associations
1,289
participating libraries
215
trigger events
40,460
committed ejournal titles
2,288,470
committed ebook titles
454
committed digital collections
Preserved content
| Preserved archival units (articles, books, etc.) | 142,414,692 |
| Preserved ejournal titles | 39,039 |
| Preserved ebook titles | 1,768,056 |
| Preserved files | 2,547,332,025 |
| Preserved images | 1,540,958,638 |
| Preserved repository-created archival files | 306,567,391 |
| Preserved supplied text files | 521,883,266 |
| Preserved application-specific files | 34,337,542 |
| Preserved multi-file packages | 21,741,129 |
| Preserved video files | 429,757 |
| Preserved audio files | 11,167 |
| Preserved executable files | 118 |