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Image Resizer

Resize a JPEG, PNG or WebP image to exact pixel dimensions or a percentage, entirely in your browser.

Your files stay on your device.

or drop a file here

Up to 50 MB and 100 megapixels. The file never leaves your device.

Used for JPEG and WebP; PNG stays lossless.

The output keeps the original format. Resizing uses a high-quality Lanczos filter.

How to use it

  1. Choose a JPEG, PNG or WebP image.
  2. Enter a new width or height (the aspect ratio is locked by default) or switch to a percentage.
  3. Check the new dimensions shown with the preview.
  4. Download the resized image.

Example

Half the width
Input:1000 × 500 image, width set to 200 with the ratio locked
Result:200 × 100 pixels

What does Image Resizer do?

Image Resizer changes the pixel dimensions of a JPEG, PNG or WebP image to a width and height you choose, or by a percentage.

How does Image Resizer work?

Your browser decodes the image and scales it with the pica library's high-quality resampling, then encodes it in the original format. All of this happens in your browser.

Is my data uploaded?

No. The image is resized in your browser and is never sent to a server.

Which formats and inputs does Image Resizer support?

Inputs: One JPEG, PNG or WebP image; Width and height in whole pixels (aspect ratio can be locked) or a percentage. Output: A resized image in the original format, with its new dimensions.

What are the limits and limitations of Image Resizer?

Limits: maximum file size 50.00 MB; maximum input size 100 megapixels; maximum result 16,384 pixels per side and 100 megapixels; tested with a 4200 × 3000 JPEG. The output keeps the original format. Metadata such as EXIF is not kept.

More questions

Does resizing keep the image format?

Yes. JPEG stays JPEG, PNG stays PNG and WebP stays WebP.

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