Resize any image to the exact 1500×500px (3:1) size for Twitter/X. Free, private, in your browser.
Resize any image to the exact Twitter/X Twitter/X Header size. Processed in your browser — never uploaded.
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Auto-fit to 1500×500px for Twitter/X
The Twitter/X Header size is 1500×500 pixels, an aspect ratio of 3:1. This is the recommended dimension for Profile header banner on Twitter/X. Your profile photo overlaps the bottom-left — keep that area clear. This tool resizes any image to exactly 1500×500px in your browser — you can zoom, reposition, and choose whether to fill the frame (cropping edges) or fit the whole image (adding whitespace), then download a perfectly-sized PNG.
To resize an image for Twitter/X: upload your image above, use the zoom and position sliders to frame it inside the 1500×500px area, choose Fill (to crop and fill the whole frame) or Fit (to keep the entire image with white padding), and download. The result is exactly 1500×500px — the correct Twitter/X Header size — so it uploads to Twitter/X without any awkward cropping. Everything happens in your browser, so your image is never uploaded to a server.
For the best Twitter/X Header: start with a high-resolution image so it stays sharp at 1500×500px, keep important content (faces, text, logos) in the center safe zone, and export as PNG for crisp edges or JPEG for smaller file size. Your profile photo overlaps the bottom-left — keep that area clear. Using the exact 3:1 ratio prevents Twitter/X from auto-cropping your image in unexpected ways, which is the most common reason posts look wrong after uploading.
The Twitter/X Header should be 1500×500 pixels with a 3:1 aspect ratio.
A Twitter/X Header uses a 3:1 aspect ratio (1500×500 pixels).
Use the Fit mode in this tool to keep your entire image with white padding, or Fill mode with the position sliders to control exactly what gets cropped to the 3:1 frame.