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Elsevier/Science Direct Alternative Access: Install Browser Extensions

Unpaywall - Chrome and Firefox

When you view a research article, Unpaywall automatically looks for a copy in their index of over 28 million free, legal full-text PDFs.


Open Access Button (OA Button) - Chrome and Firefox

The Button searches thousands of sources to get you instant, legal access to articles.

Endnote Click (formerly Kopernio) - Chrome and Firefox

A browser plug-in from Clarivate Analytics that offers free access to over 20,000 open access sources, as well as providing access via Purdue institutional subscriptions. 

Kopernio logo, green stylized letter K

Browser Extensions

Tools such as browser extensions will locate legal copies of publications in open access repositories.

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