What is Twitter Header Resizer?

Twitter Header Resizer crops and resizes any image to the exact 1500×500 pixel dimensions required for Twitter/X profile headers. Preview how your header will look and download the ready-to-use result — no design software needed.

Output is fixed at 1500x500 (the spec Twitter still uses) so any source landscape, square, or vertical shot gets cropped, zoomed, and centred to fit. A safe-zone overlay shows where your circular profile picture will sit and where mobile layouts crop the edges, so important elements stay clear on every screen.

How to use

1. Step 1 — Upload or drag-and-drop an image you want to use as your Twitter header.
2. Step 2 — Adjust the crop area to frame the part of the image you want to keep.
3. Step 3 — Preview the result at 1500×500 and download the resized header image.

When to use

• Refreshing your profile banner for a new project, season, or launch.
• Cropping a wide landscape photo so the focal point survives the 3:1 ratio.
• Adapting a square Instagram image to a horizontal Twitter header without distortion.

Result

You have a landscape photo of a city skyline at 4000×2000 pixels. Upload it, position the crop to center the skyline, and download a crisp 1500×500 header ready to upload to your Twitter profile.

FAQ

What are the exact dimensions Twitter recommends for the header image?

1500x500 pixels, 3:1 aspect ratio. Twitter still officially recommends those numbers even after the X rebrand. The tool always outputs at that size so the file uploads without any further resampling.

Why does my profile picture cover part of the header on mobile?

The avatar overlaps the bottom-left of the header on every device. The safe-zone overlay in the preview shows exactly that circle plus the area mobile crops, so you can position text or faces away from it.

Can I upload a PNG with transparency?

PNGs work, but Twitter flattens the header against a dark background after upload, so transparent areas turn dark. If you want transparency to look right, paint a background in your source file before exporting.

What's the largest file Twitter accepts for a header?

Twitter caps header uploads at 5 MB. JPEGs almost always come in well under, PNGs can get close. The tool accepts up to 20 MB on input then re-encodes to a smaller file before download.

Will the header look sharp on high-DPI screens at 1500x500?

Yes for normal viewing because Twitter scales the image down for everyone. If you want extra-sharp text on retina, design your source at 3000x1000 and resize down here, so the final 1500x500 retains the detail.

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