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    Twitter Header Size and Resizer

    New

    A Twitter header, now the X header, is 1500 x 500 pixels, and your profile picture covers part of its lower left. Drop in an image to resize it to the exact size, with that covered area marked before you upload.

    Drop an image here

    or paste one with Ctrl+V, or choose a file

    Use the biggest version you have. Every size is cut from it, and the largest banner asks for 2560px across.

    Runs entirely in your browser. Your images are never uploaded to a server.

    How it works

    1. Drop in an image. A wide photo or a banner made for another site both work.
    2. It is fitted to 1500 x 500. The dashed box shows the part your profile picture does not cover.
    3. Drag and zoom to keep faces and text inside the box, checking the phone view too.
    4. Add a post image or profile picture from the same image if you like.
    5. Download and upload it from Edit profile.

    Common use cases

    Frequently asked questions

    What size is a Twitter header?
    1500 x 500 pixels, a 3:1 shape, under 5 MB, as a JPG or PNG. That is the same for the X header; only the name changed.
    Why is my Twitter header cropped?
    Two reasons. If the image is not 3:1, X crops it to fit. And your profile picture sits over the lower left, while phones trim a little from the top and bottom as well. Resize to exactly 1500 x 500 here and keep important things inside the dashed box, and nothing that matters is lost.
    What about the size of a post image on X?
    1600 x 900 (16:9) shows uncropped in the timeline. Tick Post image to make one from the same picture, positioned separately.
    Should I use JPG or PNG?
    JPG for a photo. PNG if the header is flat color with text or a logo, which stays sharper as a PNG. Both are well under the limit at this size.
    Is my image uploaded?
    No. The resizing happens in your browser, so the image never leaves your device.

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