- Image size for Twitter's header.
- Your Twitter banner photo should be 1500px by 500px in size.
- Keep in mind that different devices display header photos differently. Keep any vital content around the centre of your header photo to avoid cropping of roughly 60px on both the top and bottom.
- Remember that your profile photo will block part of your header in the lower-left corner, so don't put anything important there.
- Images in the JPEG, GIF, or PNG file formats are supported by Twitter.
- If you're having trouble uploading, check to see if your browser is up to date, or try a different browser.
- A profile image's maximum file size is 2 MB.
- Make sure your image is no more than 5 MB in size for the best results.
