To search for free and available resources on Google Scholar, we recommend you install the Unpaywall Chrome extension.
To install this extension, follow these steps:
- Open Chrome.
- Open the Unpaywall chrome extension link.
- Select the blue Add to Chrome- It's Free button.
- This will take you to the Chrome extension page for Unpaywall. Select the blue Add to Chrome button.
- A pop-up will appear asking if you would like to Add Paywall. Select Add Extension.

- The extension will install and Chrome will take you to the welcome page for Unpaywall, which explains that a green tab next to a research article means it's free and available full-text.
- To access articles, you then need to select the green lock and this will take you to the full-text PDF.

Please note: The green tab will only appear on individual articles, not in your search results list. You will have to open each article you are interested in to confirm whether it is free.If you find an article that requires payment, do not pay for it. Instead, email us with the article details and we will try to get it for you.