The Altmetric Bookmarklet is a free browser tool for Chrome, Safari, and Firefox that lets you easily find out how much attention papers have received online.
To install the Bookmarklet:
a. Visit Bookmarklet for Researchers and register.
b. Drag the “Altmetric It” button to your bookmarks bar.

Once you install it, you can click the Bookmarklet’s “Altmetric It!” button everytime you want to find the altmetrics of an article. The altmetrics data for that paper will appear on the right side of the page. The Bookmarklet shows you the Altmetric donut , which is colour-coded according to which sources have mentioned the article.
Inside the donut, the Altmetric Attention Score for the paper. The metrics are displayed below the donut: here, you can see how many times a paper has been mentioned in various sources , such as social media , mainstream news , and blogs . You can even see the number of readers who have saved the paper in their online reference managers.

If you click for more details, you’ll get direct access to the Altmetric Details Page, on which you can find out exactly what has been said about the article.
