
Lean Library Open is a free browser extension (add-on) that enables you to access millions of peer-reviewed journal articles. It's fast and legal.
How does it work?
- Download the Lean Library browser extension.
- Select ‘Lean Library Open’ to get the free browser extension, which does not need a library subscription.

- Use Google Scholar to search for articles on your topic of interest.
- Click on the article you're interested in. Your browser extension will check across a vast database of open-access articles (over 33 million and counting) to see if there's a legal, openly available version available.
- If there is, a pop-up window will appear providing a link to the open version.
For further information, see this animated video from Lean Library.