Perma.cc is a free service created by Harvard Law School Library to help prevent link rot. It creates permanent records of the sources you cite so that others will always have access to your references. It is particularly useful for resources that do not have permanent URLs, such as blog posts and media articles, or websites with frequently updated content.
Anyone can register to use Perma.cc and can create ten free links, but if you need to preserve additional records, USC Columbia faculty, staff, and graduate students are eligible for unlimited service through the Libraries' partnership with Perma.cc.
To get started, please review the policies and user guide then request an account.