Change image dimensions to exact pixel dimensions while maintaining aspect ratio. 100% private, client-side browser processing.
Resize single photos or massive batches in three straightforward steps.
Select images from your device or drop them into the workspace.
Enter desired width or height in the settings panel. Aspect ratio locking ensures your image never stretches.
Download the resized images individually or batch export them in a single organized ZIP archive.
Yes. The 'Maintain aspect ratio' option is enabled by default. Entering a new width automatically calculates the proportionate height (and vice versa) to prevent distortion.
Yes. Drag and drop a collection of images. All images will be resized to your desired specifications concurrently and can be downloaded as a ZIP archive.
No. Convert.cool uses high-performance browser canvas and WebAssembly algorithms to resize your images on your own device. Your files never leave your computer or phone.
Yes. You can simultaneously resize and convert to JPEG, PNG, WebP, AVIF, or JPEG XL in one single step.