Set image dimensions in pixels
When a platform requires specific dimensions, resize the image and preview the final file size before download.
Core processing runs inside your browser on your device wherever possible.
Why use Resize Image?
- Automatic aspect-ratio lock
- Output JPG, PNG, or WebP
- Shows final file size
How to use it
- Choose an image.
- Enter the width and height.
- Download the new copy.
Frequently asked questions
Does enlarging an image improve quality?
No. Adding pixels cannot restore detail that does not exist in the original.
Can I preserve the image aspect ratio?
Yes. That is the default setting.
Related tools
Compress Image to a Target KB Size
Compress JPG, PNG, or WebP toward a KB target while balancing quality and dimensions, and show the lowest result when the target cannot be reached.
Convert Image Format
Convert images between JPG, PNG, and WebP in your browser with quality controls; transparent areas use a white background when saved as JPG.
HEIC to JPG
Convert HEIC/HEIF images from iPhone to JPG locally for broader compatibility with upload platforms.

