Modified by Teodora Naydenova.
This guide was originally created by Lisa Levesque.
Perma.cc was developed by Harvard Law as a way to prevent link rot. It creates a permanent, archived version of a webpage that can be used as a stable link.
Perma links solve the problem of link rot, which occurs when a link URL changes, a site is taken offline, or a link is otherwise broken. It usually results in the dreaded 404 error.
Link rot is a serious issue for legal and scholarly publishing, which rely on citations for credibility. As noted by Zittrain, Albert and Lessig, "more than 70% of the URLs within the Harvard Law Review and other journals, and 50% of the URLs found within United States Supreme Court opinions, do not link to the originally cited information."
Imagine you're writing an article and you want to cite a blog post. The live page may be taken down or changed in the future, so you create a Perma link to capture the post. The Perma link preserves the webpage just as it was on the day that you captured it. When you refer to the Perma link in your paper, you can comment on the content, images, or even comments of this page, and know that they will be available for your future reader to access.
For more information, see our Information for Faculty and Information for Students guides on the menu above.