Resize Image

Change the dimensions of an image by pixels or percentage. Lock aspect ratio to avoid distortion. Supports JPG, PNG and WebP.

Drop your image here

JPG, PNG, WebP

Files stay in your browser No sign-up required Works on any device

How to resize an image

Upload your image, set the new dimensions either in pixels or as a percentage of the original, and download the result. Locking the aspect ratio prevents the image from being stretched or squashed.

Pixels vs percentage

  • By pixels — set an exact width and height. Good when you need a specific size for a website or form upload.
  • By percentage — scale the image proportionally. Good for making something generally smaller or larger without worrying about exact numbers.

Privacy

All processing uses your browser's Canvas API. No image is sent to any server.

Frequently asked questions

Common questions about this tool.

Will resizing reduce the file size?

Usually yes — smaller dimensions mean fewer pixels and a smaller file. The actual reduction depends on the image content and output format.

What happens if I unlock the aspect ratio?

You can set width and height independently. This can stretch or squash the image.

Which format should I choose?

JPG for photos, PNG for graphics with transparency or sharp edges, WebP for the smallest file size on modern browsers.