Perma.cc: Institutional Web Archiving
Built by the Harvard Library Innovation Lab. The standard for legal and academic citation preservation.
Why Perma.cc Exists
In 2013, researchers at Harvard found that nearly 50% of the URLs cited in Supreme Court opinions no longer functioned. The Wayback Machine was insufficient because its archives could be altered or removed by robots.txt changes.
The Perma Solution
Perma.cc allows users to create immutable records of web pages. When a researcher or lawyer submits a URL, Perma captures the page, generates a WARC file, and issues a permanent short-link. Once created, that record is locked. It cannot be altered by the user, and it ignores retroactive takedown requests (unless legally compelled).
This provides the necessary chain of custody for Legal Citations.
Institutional Access
Unlike archive.today, Perma.cc is not entirely free or open to the public. While anyone can create a limited number of free links, high-volume use requires a paid subscription or affiliation with a participating academic library.
Technical Capabilities
Perma uses a combination of headless browsing and proxying to capture complex Single Page Applications. It also handles paywalled content by allowing users to capture pages while authenticated, keeping the resulting archive dark (private) but mathematically verifiable.
Perma.cc FAQ
Can a Perma link suffer from Link Rot?
Theoretically, yes, if Harvard's servers go offline. However, Perma distributes its WARC files among a network of participating libraries, creating massive redundancy against standard Link Rot.