Resize Image
Upload one or more images and change their width and height in pixels, apply a percentage of the original size, or pick a common preset (Full HD, square, portrait…).
Width, height and aspect ratio
Enter the width, the height, or both. With "keep aspect ratio" on, you only need one of the two — the other is calculated automatically so the image doesn't come out stretched.
Privacy
Resizing happens with <canvas>, the browser's native API. Your images are never uploaded to Numelto.
Resize or compress: which one you need
Resizing changes the width and height in pixels; compressing reduces the file size. If a form asks for "under 200 KB", use compress image; if it asks for specific dimensions, use this tool; for a specific portion of the photo, use crop image.
Keeping the aspect ratio when resizing
If you only enter the width or the height, the tool calculates the other value keeping the image's original proportions, so it doesn't come out distorted; you can turn this lock off if you actually need to change the aspect ratio.
Resizing several images at once
You can drop in multiple images and apply the same width/height, percentage, or preset to all of them in one go, then download them individually or together as a ZIP.