X header size
X recommends a header of 1500 × 500 pixels, a 3:1 ratio, and accepts JPG, PNG and still GIF images. That's the size this tool downloads. Your profile photo is a separate square image, 400 × 400 pixels, shown as a circle.
The header is shown at different widths on phones and computers, and X may trim a little from the top and bottom on some screens. Keep the important part in the middle band and avoid text right at the edges.
Leave room for your profile photo
Your profile photo sits over the bottom-left corner of the header, about a fifth of the way across. Anything you put there is hidden, so the guide in the preview shows roughly where the photo lands. Its exact spot moves a little between the app and the website, so leave a bit of extra space.
Centred or right-aligned text works well, because it stays away from the photo. Left-aligned text is fine too if it sits in the upper half.
What makes a good header
A header is a backdrop, not a poster. One short line, like what you write about or what you sell, is easier to read than a paragraph. Many people use no text at all and let a calm colour, pattern or photo set the mood.
Match your colours to your profile photo and your other profiles, so people recognise you when they click through from X to your site or link-in-bio page.
How to change your X header
On your profile, tap or click Edit profile, then tap the header area and choose your image. You can drag and zoom before you save. Use the PNG straight from this tool so it isn't resized twice.
Frequently asked questions
What size is an X (Twitter) header?
1500 × 500 pixels, a 3:1 ratio. The profile photo is a separate 400 × 400 image that X shows as a circle over the header's bottom-left corner.
Why is my Twitter header cropped?
X fits the header to each screen, so a little can be trimmed from the top and bottom, and the profile photo covers the bottom-left corner. Keep text in the middle.
Where does the profile photo sit on the header?
Over the bottom-left corner, roughly a fifth of the way in and half overlapping the bottom edge. Turn on Show guides to see it on your design.
Can I use a photo as my header?
Yes. Choose Photo and pick an image; it fills the header and the edges are trimmed evenly. Darken it a little if you add text on top.