Image Resizer
Resize images to exact dimensions or by percentage, offline.
Drop an image to resize
Nothing is uploaded — resizing happens on a canvas in your browser
About Image Resizer
Serving a 4000 pixel wide photo into a 400 pixel wide slot wastes bandwidth and slows rendering. Resizing to the size you actually display is basic hygiene for any web page.
This resizer works entirely on-device, supports exact pixel dimensions or percentage scaling, locks the aspect ratio by default, and exports as JPG, PNG or WebP.
Frequently asked questions
Does it keep the aspect ratio?
By default yes - editing one dimension updates the other. Unlock the ratio to stretch the image deliberately.
Can I enlarge an image?
You can, but pixels that were never captured cannot be recovered, so upscaling always looks softer than the original.
Which formats are supported?
Anything your browser can decode: JPG, PNG, WebP, GIF (first frame), BMP and usually AVIF.