Twitter Header Resizer
Resize any image to the perfect Twitter / X banner size — 1500 × 500 px — instantly in your browser. Preview safe zones, adjust crop, and download as PNG or JPG. Free, no login, no upload to server.
Why Use the Correct Twitter Header Size?
Desktop — Full Banner
On desktop, Twitter displays the full 1500 × 500 px banner. Use the entire canvas for visual impact.
Mobile — Cropped Sides
On mobile, the left and right edges are cropped. Keep important content inside the centre safe zone (1260 × 420 px).
Tablet — Slightly Cropped
Tablets show a version between desktop and mobile. The safe zone overlay keeps your key content protected on all screens.
How to Resize Your Twitter Header
Click "Choose Image" or drag and drop any photo — JPG, PNG, GIF, or WEBP. Any resolution works.
Use the Scale slider to zoom in/out. Drag the image on the canvas to reposition, or use the Horizontal/Vertical sliders.
Enable "Show safe zone overlay" to see which area is visible on all devices. Keep text, logos, and faces inside the dashed box.
Click "Download Header" — you'll get a 1500 × 500 px PNG (or JPG) ready to upload to Twitter / X immediately.
Twitter Header Image Specifications
| Specification | Value |
|---|---|
| Recommended size | 1500 × 500 px |
| Aspect ratio | 3:1 |
| Maximum file size | 5 MB |
| Supported formats | JPG, PNG, GIF |
| Mobile safe zone | ~1260 × 420 px (centre) |
| Minimum size | 600 × 200 px |
Frequently Asked Questions
The recommended Twitter / X header size is 1500 × 500 pixels with a 3:1 aspect ratio. The maximum file size is 5 MB and supported formats are JPG, PNG, and GIF.
No. This tool processes your image entirely inside your browser using the HTML5 Canvas API. Your image never leaves your device and is never uploaded to any server.
Twitter crops the header differently on mobile devices, cutting the left and right edges. Enable the Safe Zone Overlay in this tool — the dashed box shows you the area visible on all devices. Keep your important content (text, logo, face) inside this box.
Yes, Twitter supports animated GIF headers. Keep the file under 5 MB and use the same 1500 × 500 px dimensions. This tool outputs static PNG/JPG — use an animated GIF directly on Twitter for animation.
Use PNG for illustrations, text, logos, or graphics with sharp edges — it preserves quality perfectly. Use JPG for photographs where file size matters more than perfect sharpness.