Image dimensions guide

How to resize an image to exact dimensions

Learn how to resize an image by pixel width and height or percentage while keeping its proportions, then export it in a suitable format.

Use the Image Resizer to enter exact pixel dimensions, lock the aspect ratio, and download a resized copy.

Understand the difference

Resizing changes the number of pixels in an image. Cropping changes which part of the image remains visible. If you need the entire image to fit a frame, resize with the aspect ratio locked; if the destination requires a different shape, crop or add padding before resizing.

Recommended workflow

Choose the original image dimensions as your starting point. Enter a target width, keep the proportions locked, and let the tool calculate the height. For a percentage resize, a 50% scale halves both width and height, producing roughly one quarter of the original pixel count.

Quality and compatibility tips

Use JPG for photographs, PNG for lossless graphics, and WebP when a web-friendly format is supported by your destination. Always inspect text, fine edges and image dimensions after exporting.

Frequently asked questions

Will conversion always make my file smaller?

No. Output size depends on the source content, chosen format, dimensions and quality settings. Check the actual result rather than relying on a guaranteed percentage.

Are my files uploaded to Cliperfly?

The linked tool processes files locally in your browser. The guide itself does not require uploading a file.

Try the related tool ↗ Browse image tools ↗