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WEBSITES CHANGE. PERMA LINKS DON’T.

Perma.cc helps scholars, journals, courts, and others create permanent records
of the web sources they cite.

Perma.cc is simple, easy to use, and is built and supported by libraries.


Sign up and use Perma.cc How can my library get involved?

PERMA.CC IS A SIMPLE WAY TO PRESERVE YOUR LINKS.

Step 1 Find any URL.

Step 2Add it to Perma.cc.

Step 3Create a Perma Link.

Step 4Cite safely.


ONE GOOD REASON TO USE PERMA.CC? HOW ABOUT 404?

Websites change, go away, and get taken down. When linked citations lead to
broken, blank, altered, or even malicious pages, that’s called link rot.


LINK ROT AFFECTS EVERYONE WHO CITES LINKS

Over 50% of cited links in Supreme Court opinions no longer point to the
intended page. Roughly 70% of cited links in academic legal journals and 20% of
all science, technology and medicine articles suffer from link rot.


ARTICLES AND STUDIES

 * Perma: Scoping and Addressing the Problem of Link and Reference Rot in Legal
   Citations (Perma.cc archive) The Harvard Law Review, 2014
 * The Cobweb (Perma.cc archive) The New Yorker, 2015
 * Scholarly Context Not Found: One in Five Articles Suffers from Reference Rot
   (Perma.cc archive) PLOS One, 2014


LINK ROT DESTROYS THE INTEGRITY OF YOUR CITATIONS

Links start healthy. New citations have been vetted and verified.

After one year. After a year, over 20% of cited links may be dead or otherwise
inaccessible.

After five years. After five years, the situation is much worse — over 50% of
cited links can be affected.

As time goes on. Link rot is inevitable and rarely reversible. The longer the
wait, the more likely a link will have rotted.

Sign up and start preventing link rot

Data taken from “Perma: Scoping and Addressing the Problem of Link and Reference
Rot in Legal Citations,” Jonathan Zittrain, Kendra Albert & Lawrence Lessig.
Harvard Law Review. March 17, 2014.


MEET THE PERMA LINK.

A Perma Link is a reliable, unbreakable link to an unalterable record of any
page you’ve cited. It’s a time capsule for a web page, which your readers can
easily access.


WE’RE COMMITTED TO PRESERVATION

Websites change, go away, and get taken down. When they do, linked citations can
lead to broken, blank, unintentional, or even malicious pages. This decay is
called “link rot.” Perma.cc helps scholars, journals and courts prevent link rot
by creating permanent, reliable, unalterable links to the online sources cited
in their work.

All about Perma Links


FREQUENTLY ASKED QUESTIONS

Once you capture a Perma Link, neither its content nor its address will change,
no matter what happens to the original link.

 * Who runs Perma.cc?
 * How long do Perma links last?
 * Can I delete a Perma link?
 * Is Perma.cc open source?
 * What’s your privacy policy?

More questions? Get more answers.


IT’S EASY TO MAKE AND USE A PERMA LINK.

Copy. Paste. Perma.

Step 1 Find the page you want to preserve. Copy its URL and open Perma.cc.



Step 2 Add your URL to Perma.cc. Select Create Perma Link and Perma.cc does the
rest.

Step 3 Get your Perma Link. Perma.cc builds your new record in a matter of
moments. When it’s finished, you have a chance to delete or annotate it.



Step 4 Use the Perma Link in your citations. Use your Perma Link as you would
the original cited URL. Your citation is safe from link rot — it will never
change or break.


BUILT TO LAST.

Libraries are in the forever business. We’re committed to preserving your
digital records to the same standards that we preserve physical records. That’s
why over 150 journals, courts, and universities trust us with their citations.


PERMA'S PARTNERS

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ARTICLES AND AWARDS

 * Webby award winner: Best Law Website (Perma.cc archive) 2015
 * Cooking up a solution to link rot (Perma.cc archive) Law Library of Congress
   Blog, 2015

 * The Problem with URLs in Legal Marketing (Perma.cc archive) BloombergBNA Big
   Law Business, 2015
 * Can the Internet Be Archived? (Perma.cc archive) The New Yorker, 2015


SIGN UP FOR FREE

It only takes a minute to sign up with Perma.cc. Select your organization and
get started.

Libraries. Libraries play a critical role in powering and supporting Perma.cc.

Perma.cc for libraries

Faculty and journals. Over 150 academic law journals use Perma.cc.

Perma.cc for journals

Courts. Courts demand long-term reliability from the links in their decisions.

Perma.cc for courts

Everyone. Anyone can create a free account and start creating Perma Links.

Perma.cc for everyone

Interested in developing with the Perma.cc API? Check out Perma.cc for
developers.


PERMA.CC’S SUPPORTING PARTNERS



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