Instagram is a social media platform that allows users to share photos and videos. The app has many features, such as the ability to add emoji to posts. To add emoji to an Instagram post, first open the app and sign in. Then, click on the three lines in the top left corner of the main screen and select “Add Emoji.” Once you have added emoji, you can use them to represent different emotions or situations. For example, if you want to post a photo of your dog playing with a ball, you could add an emoji that shows excitement.