4K*Stogram is an Instagram Downloader for PC, Mac and Linux. The program allows you to download and backup Instagram photos and videos :
https://www.4kdownload.com/products/product-stogram
Recommended with a bit of caution as, once logged to your account(s), the program starts to automatically download pics and videos from the chosen accounts and/or hashtags on your pc. So beware of your INTERNET bandwidth and storage capacity !
Other programs available @
https://www.4kdownload.com/