How to resize an image
- Choose one or more images.
- Enter the width you want in pixels.
- Keep 'aspect ratio' on to scale height automatically, or turn it off to set both.
- Press Resize Image - the resized file downloads automatically.
Whether you need a 800px thumbnail or a specific size for an upload form, resizing scales the image to exact pixel dimensions. With aspect ratio locked, the height adjusts automatically so the photo never looks stretched.
Frequently asked questions
Are my images uploaded?
No. Everything runs inside your browser using JavaScript, so your images never leave your device.
Does it keep the aspect ratio?
Yes by default - enter a width and the height scales automatically. Turn the checkbox off to set both.
What formats work?
JPG, PNG and WebP. The output keeps the original format.
Is it free?
Yes, free with no signup and no watermark.