Resize Image

Image resize changes the pixel width and height of a photo so it fits a specific space: a website hero banner, an email attachment limit, a job application photo field, or a marketplace listing that requires an exact size. Instead of opening a full photo editor, you drag a corner handle or type new numbers and the tool recalculates the image right away. This is different from cropping, which cuts away part of the picture instead of scaling it. Resizing keeps the whole scene but changes how many pixels represent it, which usually also shrinks file size since fewer pixels take less data to store.

Online sellers resizing product photos to match a marketplace's exact size rules, students shrinking phone photos before uploading to a school portal with a file size cap, job seekers resizing headshots for application forms, and bloggers preparing images that load quickly on a website all reach for this tool. Anyone who has hit an upload error saying a photo's pixel dimensions are too large, or a form that demands an exact width and height, can fix it in a few clicks instead of opening a full photo editor or installing new software.

It locks width and height together using the image's original proportions, so dragging one dimension or typing a new number updates the other automatically. This avoids stretched or squashed results, which is especially obvious on faces and logos.

Upload JPG, PNG, or WebP. Output defaults to the first file's format so PNG transparency is kept unless you switch, and you can choose JPG, PNG, or WebP when your browser supports it.

Browsers can only trigger one download at a time, so resizing several images at once would otherwise open many separate download prompts. A ZIP bundles the results into one download, and the same size settings apply to every file even though the preview only shows the first image.

No. Images are decoded, resized on canvas, and exported entirely in your browser. They are never sent to Justools servers.

Resizing always re-encodes the image, so JPG and WebP quality settings affect sharpness and file size. Shrinking a photo rarely looks bad, but enlarging a small image past its original size can make it blurry.

Resize changes pixel dimensions, which often reduces file size as a side effect. Compress Image keeps the same dimensions and instead lowers quality to shrink size. Use Resize when you need an exact width or height, and Compress when you just need a smaller file.