This easy trick would allow you to transfer media files between your mobile and PC.

Note: Since WhatsApp compresses the media automatically before sending, the media which you will be transferring would automatically be compressed.

Steps:

1. Create a group, add someone, remove him or her so that you are the only person in the group. (This trick is discussed in the later part of the article)
2. Open WhatsApp Web, and log-in by scanning the QR code.
3. Send the desired media from your phone to your group through WhatsApp.
4. Once uploaded, open the same chat on WhatsApp web, and download the file on your system!
5. Done!