In the era of web world we want to be get connected with many social websites. Facebook is one among this.
It happens many time when you receive friend request profile picture uploaded in Facebook by sender is too small to identify the person. In this case you may just like that accept or simply reject.
For this here is the way out....
Open the profile and Right Click on profile picture and View Image.. It wall display the photo in small size (in 160X160 size)
Link to Image may look similar to following
https://fbcdn-profile-a.akamaihd.net/hprofile-ak-frc3/t1.0-1/p160x160/10245207_101521564103834_31861043156981018_n.jpg
Now just delete the size criteria of image i.e "p160X160" and enter.
eg :
https://fbcdn-profile-a.akamaihd.net/hprofile-ak-frc3/t1.0-1/
Bingo.. The image displayed is of Actual uploaded size..