Image Resizer
Set a maximum width and height and the tool scales each image to fit inside it, preserving the aspect ratio. Good for preparing photos for a website, an upload form, or an email.
How to use it
- Add your images to the drop area.
- Enter the maximum width and height in pixels, and leave Allow upscaling off unless you really want small images enlarged.
- Press Resize and download the results — the filename records the new dimensions.
Why it stays private
Scaling is done with the browser's own image decoding and canvas scaling, all in memory. Files are never copied off your device, which matters when you are preparing things like ID documents or contracts to fit a size limit.
Questions
Does it keep the aspect ratio?
Yes, always. Each image is scaled so that it fits inside the box you specify, and the smaller of the two ratios wins. Nothing is stretched or cropped.
Should I enable upscaling?
Almost never. Enlarging a raster image cannot add detail that is not there — the result is soft and larger in file size. Leave the box unchecked unless you specifically need to hit a minimum dimension for a form.
Will the output be sharper than my image editor?
No. This is a fast convenience tool using the browser's scaler, which is good but not a match for a dedicated editor with Lanczos resampling. For critical work, use professional software.