Resize image

Resizing changes the pixel dimensions of an image — the actual width and height of its grid of pixels. It is the single most effective way to reduce file size, because pixel count dominates everything else: halving both dimensions removes 75% of the data before compression even starts. It is also often a requirement in itself, when a website, print shop or CMS expects specific dimensions.

This tool offers two modes. Fit scales the image so it sits within the width and height you enter, preserving the aspect ratio — nothing is cropped and nothing is distorted. Cover produces exactly the dimensions you specify by scaling and then cropping evenly from the center, which is what profile pictures, banners and thumbnails usually need.

Downscaling is where resizing shines: a high-resolution photo reduced with proper resampling stays crisp, often looking sharper on screen than the browser-scaled original. Upscaling is the opposite — no algorithm can invent detail that was never captured, so an enlarged image will always look somewhat soft. When you have a choice, start from the largest original available and scale down, and always resize from that original rather than from a previously resized copy.

Everything runs locally in your browser: images are never uploaded, processing time depends on the image and your device, and your originals are never touched. Combine resizing with the quality and format options to produce a file that is both the right dimensions and the right size in kilobytes — which is what most upload forms and content systems are really asking for.