Resize Images Online — Free Image Resizer

Whether you need an image to fit an exact pixel size for a form upload, or you just want to scale a whole batch down by half, the resizer handles both in one place. Switch between percentage mode — which always keeps proportions intact — and pixel mode, where you type an exact width and height.

With aspect ratio locked (the default), changing the width automatically recalculates the height so your image never looks squashed or stretched. Unlock it if you deliberately need a different ratio.

Resizing runs on canvas in your browser using high-quality image smoothing, so downscaled images stay crisp rather than blocky. Combine it with the compressor afterward for the smallest possible file at the size you need.