Resize image to 3840x2160
Resize and crop any JPG, PNG or WebP to exactly 3840x2160 pixels (16:9). Made for: 4K wallpaper. Free, batch-friendly, and it all happens in your browser, so nothing is uploaded.
Resize settings
How to resize an image to 3840x2160
- Drop your images in the box above (or paste with Ctrl+V). Any number at once.
- The size is already set to 3840x2160. Choose Crop to fill to fill the frame, or Fit inside to keep the whole picture with bars.
- Click Resize images, then save each one or download them all as a ZIP.
3840x2160 is 4K UHD, four times Full HD. Use it for 4K monitor and TV wallpapers. Upscaling a small photo to 4K won't add detail, though.
Aspect ratio 16:9. If your photo has a different shape, crop to fill trims the edges evenly from the centre; fit inside keeps everything and adds bars in the colour you pick.
Resize image to 3840x2160: questions
What is 3840x2160 used for?
3840x2160 is 4K UHD, four times Full HD. Use it for 4K monitor and TV wallpapers. Upscaling a small photo to 4K won't add detail, though.
Will resizing to 3840x2160 stretch my photo?
No. By default it crops to fill, so nothing is squashed. Pick Stretch only if you really want that.
Are my images uploaded?
No. The resizing runs on your device inside the browser. Nothing is sent to a server.