How To Check Who Sent Your Picture On Instagram. Originally, instagram wrote this text above your message requests: You can tap someone's profile picture to view messages they've sent and reply to them.

Open the messages app → tap on any conversation where you have exchanged a lot of photos. One of the easiest ways to find out if someone is using your pictures is to do a reverse image search of any of your photos that you have used on your profile that can be openly viewed by anyone on the internet. You will be able to know if someone screenshots your instagram dm photo if there is a “windmill” icon beside it.