Image dimensions
Resize images to the dimensions you need.
Set a precise pixel width and height, preserve the original proportions when you want, and preview your resized image before saving.
Image resizing workspace
Original image
Dimensions must be whole numbers from 1 to 10,000 pixels. Output is limited to 40 megapixels.
Resized image
Resize an image by pixel dimensions
Enter the width and height you need, then resize the image in your browser. The aspect-ratio lock keeps the original proportions when changing either dimension. Compare original and output dimensions and download the resulting PNG.
Preserve or adjust the aspect ratio
Keep the ratio locked to avoid stretching. Unlock it only when you intentionally need a different shape. The image preview helps you confirm the result before saving.
Frequently asked questions
What dimensions can I enter?
Enter whole-number pixel dimensions from 1 to 10,000 per side. To keep browser processing responsive, the output is limited to 40 megapixels.
Will the image be stretched?
The aspect ratio is locked by default. When locked, changing width automatically adjusts height proportionally, and vice versa.
Are my images uploaded?
No. The selected image is resized locally in your browser and is not sent to this website.