What size is a 4K Wallpaper image?

4K Wallpaper images are 3840 x 2160 pixels. Ultra HD 3840 x 2160 desktop wallpaper.

Will my image be stretched?

No. The image is scaled to fill and centered, then cropped to fit exactly, so it never looks stretched.

100% Client-side

No. Resizing runs entirely in your browser. Nothing is uploaded.

Resize any photo to 3840 x 2160 pixels, the right size for 4K Wallpaper. Ultra HD 3840 x 2160 desktop wallpaper. Nothing uploaded.

or drop image here

JPG, PNG, WebP. Any size works.

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1. Add your image

Drop in a JPG, PNG, or WebP.

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2. Fit to 3840 x 2160

We scale and center-crop so it fills the frame perfectly.

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3. Download

Save your 4K Wallpaper ready image.

What is the correct size for 4K Wallpaper?

3840 x 2160 pixels. Ultra HD 3840 x 2160 desktop wallpaper.

Are my images uploaded?

No. Resizing runs entirely in your browser. Your image never leaves your device.

Will the image look stretched?

No. We scale to fill and center-crop, so the image keeps its proportions and never looks stretched.

Is this free?

Yes. Free, no signup, no limits.