Resize an Image by Percentage

Reduce or enlarge one or more images by simply entering a percentage of their original size, without having to calculate the exact pixel dimensions yourself.

Drag and drop your images here, or click to choose

How It Works

Instead of guessing exact pixel dimensions, it's often simpler to think in percentages: 'reduce by half', 'enlarge by 150%'. The tool first reads each image's actual dimensions, calculates the target width and height proportionally to the chosen percentage, then resizes using a Lanczos3 filter that preserves sharpness even when reducing.

Is the aspect ratio preserved?

Yes, always: the same percentage is applied to both width and height, so each image's original aspect ratio stays identical, with no distortion.

Can I enlarge an image beyond 100%?

Yes, up to 500%, but keep in mind that enlarging an image beyond its original resolution doesn't create extra detail: the result will be smoothed but never sharper than the original. For quality enlargement, stick to moderate factors (150-200%).

100% local processing: the resizing is done entirely in your browser via WebAssembly — your images are never sent to a server.