In SharePoint 2013, you can
drag the documents from the file system and drop it in the document library
which is a new feature introduced in the document library. Drag the documents
from the file system and move the documents to the document library, you can
find a rectangle space indicating drop here.
Once you drop the documents
in the document library you can find the uploading status as shown in the
following figure.
Documents will be uploaded
successfully by just drag and drop which is a very good feature in SharePoint 2013 that makes users to upload the documents easily.