A major feature of Mendeley is the web importer.
Import papers, web pages and other documents directly into your Library from search engines and academic databases. Mendeley web importer is available for all major web browsers.
To get it:
1. Go to https://www.mendeley.com/import/
2. For Chrome or Firefox: Click the “browser extension” link
3. For other browsers: Drag the "Save To Mendeley" button to your Bookmarks Bar
Use the Mendeley web importer button to import citation information from:
Just click the button and the web importer will look for citation information on that page. You may need to sign in to your Mendeley account if you haven't already done so. There is a check-box option to download the full text PDFs, if found. Select the items you want to save to your Library and click 'Save' or 'Save all'. These items will be saved to your Mendeley Web Library. Make sure to sync your Desktop Library to have them added there as well.
Remember to always check the citation information that Mendeley imports, as it may not be 100% correct, depending on the source.