You can Add or sync the WhatsApp Profile Picture of your contact from WhatsApp Web to Phone Contacts with InTouch Extension.
Before you proceed, you need InTouchApp installed on your phone & InTouchApp Extension installed on Chrome or Firefox. Learn more.
How to add/sync WhatsApp Profile picture:
Step 1 - Open web.whatsapp.com in the browser and Scan the QR code by using WhatsApp on phone.
Step 2 - Select the contact whose Profile Picture you want to be added in the Phone Contact book.
Step 3 - On the top right side of the Chat screen on the Options bar, you will see a red image icon - Click on the same. The image will be added to your contact shortly.