Image Resizer
Drop your image here
PNG · JPG · WebP
Dimensions
W px
H px
Done
Before
After
Preview will appear here
How to use
Three steps.
01
Drop your image
PNG, JPG, or WebP. The original dimensions appear automatically.
02
Set dimensions
Enter width or height. Aspect ratio locks automatically. Unlock for custom dimensions.
03
Download
Resized in milliseconds. Same format as the original — JPG in, JPG out.
FAQ
Common questions.
Scaling down preserves quality well. Scaling up beyond the original will introduce blurring — resize downward for best results.
No. All processing runs locally using JavaScript Canvas. Your file is never transmitted anywhere. Works offline after the first load.
Yes. Click the lock button to unlock the aspect ratio, then enter any values independently.
PNG, JPG/JPEG, and WebP. The output format matches the input. For HEIC photos from iPhone, convert them first using the HEIC to JPG converter, then resize here.