If you want to zoom in on profile photos of people you're interested in, the instazoom website Instazoom has a handy tool you can use. You simply need to know the username or public profile url of the account you want to zoom in on and paste the link into the Instazoom website. This website allows you to view the full resolution of any Instazoom picture. It also allows you to identify unknown accounts. Besides zooming in on profile pictures, the Instazoom tool also has filters to apply to the image and allows you to set the maximum zoom scale.

Another way to zoom profile photos on Instazoom is to download them and view them in full resolution. This is possible because you can use the camera icon to download the full resolution of the pictures. If you'd like to view the full-resolution picture of a particular user, you can zoom in on it by using the camera icon. This tool works both on desktops and mobile devices.