Streampost

X (Twitter) Image Size — post image, header and profile picture

Resize images to X dimensions: post image 1600 × 900, header 1500 × 500, profile picture 400 × 400. Free, in your browser.

How it works

  1. 1

    Upload your image

    Drag your image into the field or pick a file. It stays entirely on your device — nothing is sent to a server.

  2. 2

    Choose a format

    Pick the X (Twitter) format you need. The preview immediately shows how your image will be cropped.

  3. 3

    Download

    One click and you get the image at exactly the pixel dimensions X (Twitter) expects — ready to upload.

Popular use cases

  • Content creators

    No cropping by the app

    Upload images at the right dimensions instead of letting X (Twitter) decide which part of your subject gets cut.

  • Cross-posting

    One shot, every format

    Turn a single photo into square, portrait and landscape versions — no image editor required.

  • E-commerce

    Consistent product shots

    Bring all product photos to the same dimensions so your feed looks tidy and professional.

  • Agencies

    Prepare assets fast

    Adapt client material in seconds without opening Photoshop or taking up a licence seat.

  • Photography

    Keep your resolution

    Export at the full recommended resolution so your images are not displayed unnecessarily soft.

  • Profile optimisation

    Profile pictures without distortion

    Get your profile picture into the right aspect ratio up front instead of wrestling with it on upload.

On X, images in a 16:9 ratio (1600 × 900) display most reliably in the timeline. The profile header measures 1500 × 500 pixels, the profile picture 400 × 400.

The header deserves extra care: it gets cropped at the sides on narrow screens, and the round profile picture overlaps the lower-left corner. Keep important content centred.

All processing runs in your browser; your image is never uploaded.

Frequently asked questions

What is the best image size for X posts?

1600 × 900 pixels in a 16:9 ratio displays most reliably in the timeline without cropping.

How big is the X header?

1500 × 500 pixels. Note that the profile picture overlaps the lower-left corner.

What size is the X profile picture?

400 × 400 pixels. It is displayed cropped to a circle.

Is my image uploaded?

No, everything runs in your browser.

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