When you’re designing cover photos, graphics, and other social media assets, sometimes knowing the bare bones image dimensions isn’t enough. Here is everything you’ll need to know when creting images for your Twitter page.
Original Source: https://makeawebsitehub.com/social-media-image-sizes-cheat-sheet/
Twitter Image Sizes
Header photo: 1500 px wide by 500 px tall
Profile image: 400 px wide by 400 px tall
In-stream photo: 440 px wide by 220 px tall