InstaZoom

InstaZoom is an online website that can be used to see full size photo of Instagram users. Instagram does not allow people to see zoomed photo of user. But with InstaZoom you can surpass this restriction easily. Just get the username of the Instagram account and paste on InstaZoom website. After the username is processed, you will easily be able to see their full size HD photo. Instazoom will never ask you for Instagram login details to use its tool. It just ask for Instagram username.