A profile picture is one of the first things someone sees when viewing a profile on Instagram. However, as of right now, Instagram has not yet made it easy to view a profile picture at full-size, which can be frustrating.
Thankfully, viewing an Instagram account's profile picture is surprisingly simple to do, if you know what to look for. When viewing an account on a full browser, preferably on a computer (not on the Instagram app), type in the Instagram account whose profile picture you want to view. If their username is @exampleinstagramaccount, you'd type in instagram.com/exampleinstagramaccount, as the URL.
1. Hover your mouse over the profile photo and right-click on it (or press Ctrl and tap the mouse button on a Mac), then click "View Image". The small version of the profile picture will then be the only item displayed.
2. In the address bar for that image, look for a section of the URL denoted as /s150x150 and erase it, and only it. Voilà! If you did it correctly, the significantly larger full-size profile photo should then be displayed.
A Couple Things to Note: The /s150x150 is the designation for the size constraints (150 pixels high and wide), by erasing that, you're simply allowing the photo to display at its original intended size. There may be some circumstances where you don't see that in the URL - if so, that means that the profile photo is relatively old, and this trick wouldn't work for it, anyway.