ImageRecrop

Resize and crop

4K wallpaper size

Crop any image to 3840×2160 for a 4K desktop wallpaper. Adjust the crop area and export at full resolution.

Output size: 3840 × 2160 px

Source

Drop your image here

PNG, JPEG, WebP, GIF or SVG · paste with Ctrl+V · select multiple for batch

Output

Live preview updates as you adjust

Dimensions
Size presets
Layout
Workflow presets
Export

Preview will appear here

How to crop an image to 3840×2160 pixels

4K wallpaper size outputs 3840×2160 pixels (16:9 aspect ratio). Crop any image to 3840×2160 for a 4K desktop wallpaper. Adjust the crop area and export at full resolution.

This size is commonly used for ultra HD desktop backgrounds and presentation backdrops. Starting from the recommended dimensions helps avoid unexpected cropping when you upload images to desktop and 4K displays.

Tip: 3840×2160 is standard 4K UHD; JPEG keeps file size reasonable for large photo wallpapers. Use the live preview before downloading so you can check framing, sharpness, and file size.

Steps

  1. Open this page and upload the image you want to crop to 3840×2160 pixels.
  2. Drag the crop box or use the corner handles until the subject is framed the way you want.
  3. Confirm the output width and height match the preset, then choose an export format.
  4. Download the file and upload it to the destination that requires this size.

Common questions

Why use 3840×2160 pixels?

Many platforms and design specs expect 3840×2160 pixels (16:9 aspect ratio). Matching the spec reduces automatic resizing and unwanted cropping.

Are my images uploaded to a server?

No. Cropping and export run in your browser. Files stay on your device unless you download or copy them.

Can I export a different format?

Yes. The output panel supports PNG, JPEG, WebP, and AVIF where your browser allows it.