Mendeley Web importer allows you to add references quickly to your Mendeley library from the internet. 

You can install the Web Importer to your internet browser from this link: https://www.mendeley.com/reference-management/web-importer

Useful tip: after you install the Web Importer, you can bookmark it in your internet browser toolbar for quick access. As you browse the internet, you can select the Web Importer to add references to your Mendeley library (log in with Mendeley account required). 

Please note:

• It is always a good practice to proofread the details (authors, title, publication year, type) of the references that you added to your Mendeley library. When the details are not correct, or missing, you can modify those. 
• To locate the references added using the Web Importer, you can check the 'Recently Added' tab on the left-hand side column.
• If you can't find the reference(s) using the Web importer, select the 'Sync' button located at the bottom left side of Mendeley.