Online Image Resizer: Custom Dimensions & Units
Change image dimensions with pixel precision. Lock aspect ratio, switch between pixels (px), centimeters (cm), and inches (in) at 300 DPI, and download crisp, optimized images instantly.
Upload an image to resize
Accepts JPG, PNG, and WebP images. Processed entirely in your browser.
How to use Resize Image in 4 simple steps
Fast, private, and runs entirely in your local browser memory.
Upload your photo
Select or drag your image (JPG, PNG, WebP) into the studio workspace.
Set dimensions or unit
Enter custom width and height, or switch units between pixels, centimeters, or inches at print DPI.
Lock aspect ratio
Toggle aspect ratio lock to automatically preserve image proportions.
Process and save
Click Resize to process in local RAM and download your resized file immediately.
Key features & capabilities
Popular form & document presets
Frequently asked questions
Can I resize in centimeters (cm) or inches (in)?
Yes! The tool automatically converts physical measurements to pixel dimensions based on the standard 300 DPI printing resolution.
Will resizing stretch or distort my picture?
No. By enabling the Aspect Ratio Lock, the height or width recalculates automatically to prevent stretching.
Are my images uploaded to any server?
Never. Everything is executed entirely in your device’s local browser memory using the HTML5 Canvas API.