Mendeley Web Importer detects article identifiers on the page you are viewing and automatically retrieves metadata and PDF full texts (where available) for you to add to your library. You just need to be viewing an article or a list of references in the browser and click on the Mendeley Web Importer extension icon in the toolbar. 

You'll need a Mendeley account to save, read and cite the articles you import. To sign up and receive 2GB free storage space, visit https://www.mendeley.com