Twitter header looks like a cover photo on top of your Twitter profile and should be 1500px by 500px.
Be careful that header images display differently on different devices. So, make sure to keep important information close to the center.
Twitter header image format
Twitter header should be JPG or PNG file that weighs less than 2 megabytes. It might be best for images with a logo or text as a PNG file.
Why your Twitter header matters
Twitter header is a small but essential tool for promoting your business, services, or personal brand. It’s the first thing seen by anybody who visits your Twitter profile.
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