To save an Instagram DPto your phone or computer, simply copy the link and paste it in a browser window. This can be done on mobile phones and desktops, or even on a tablet with a web browser.
If you're looking for an easier option, you can also use a browser extension to access and download Instagram photos in bulk https://instadp.io/. This is a good option for large numbers of images, but it can take some time to load each image before you can download it.
Another popular method is to use a service like Instadp or iGram. These services work on both mobile and desktop, and are a quick and easy way to download a profile picture from any public or private Instagram account.
The best thing about these tools is that they are incredibly easy to use. All you need to do is enter the username of the account that you'd like to download a DP from, and they will do the rest.
This tool will then show you a list of all the images posted on that account and allow you to select and download any one that you'd like to. You can also sort and filter by size or date.
If you're not using a desktop or laptop computer, the Instadp website works well on most tablets as well, and it will work on most Android phones. The only thing to keep in mind is that the photos aren't high-resolution. This can be a problem if you're going to be using them for large prints or other materials.