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Image Resizer

Resamples pixels to a target width and height.

Processed locally in your browser. Your file never leaves your device.
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How Image Resizer works

Resamples pixels to a target width and height. Lock the aspect ratio to preserve proportions.

Try an example

1920 × 1080 resized to 960 × 540 retains a 16:9 aspect ratio.

Good to know

Upscaling cannot recover missing detail. JPG, PNG, WebP and browser-decodable AVIF inputs (named converters require their stated source format); 25 MB and 24 megapixels maximum. Output is a single still frame; animation, source colour profiles and metadata are not preserved.

Your privacy

Processing happens on this device for this tool. We do not upload your input, put it in share links or save it to your favourites. Closing this tab discards the working input; downloaded results remain wherever you save them.

When this tool is useful

Resize is the right choice when a service asks for particular pixel dimensions or when an image is needlessly large for its display size.

How to use it

  1. Choose the image and enter the target width or height.
  2. Keep the aspect-ratio lock on unless you intentionally need a stretched canvas.
  3. Review the new dimensions and download the result in a format suited to its destination.

Checks before you rely on the result

  • Upscaling creates larger pixels but cannot recover detail that was not captured.
  • Cropping and resizing solve different problems; crop first when the composition is wrong.
  • The browser works on a decoded copy and leaves the original untouched.

This page is maintained with the tool implementation and its deterministic tests. If the result looks wrong, report the issue with a non-sensitive example.

Read the Image Resizer instructions

A useful next step

Batch Image Studio
Image Compressor
Image Metadata Remover
Made for clarity. Built to be useful.Report an issue