What is an image resizer?
An image resizer changes the pixel width and height of a picture. It can make an image smaller for websites and email or create an exact size for profiles, posts, and documents.
Keep the aspect-ratio lock enabled to avoid stretching, or unlock it when you need precise custom dimensions.
How to use this tool
- 1Upload the image you want to resize.
- 2Enter the required width or height in pixels.
- 3Lock or unlock the original aspect ratio.
- 4Preview and download the resized PNG.
Exact dimensions
Enter pixel-perfect width and height values up to 8,000 pixels.
Aspect-ratio lock
Keep image proportions correct while changing either dimension.
Runs locally
Resizing happens in your browser without uploading your file.
Frequently asked questions
Can I resize without stretching the image?+
Yes. Keep the lock enabled and the other dimension updates automatically.
Can I enter width and height separately?+
Yes. Unlock the aspect ratio to enter both dimensions independently.
Does resizing happen on a server?+
No. The browser redraws the image locally using Canvas.
What is the maximum output size?+
The tool accepts dimensions up to 8,000 pixels per side, subject to browser memory limits.