imageDifficulty: 2/5
Image Resizer
Resize images by pixel dimensions or percentage, with an optional aspect-ratio lock. Choose the output format and download instantly, all client-side.
Drop an image here or click to browse
JPG, PNG or WebP • up to 50.00 MB • max 40 MP • processed locally
How it works
- Drop in an image — the current dimensions are filled in for you.
- Enter a new width or height, or switch to percentage mode.
- With the aspect ratio locked, the other dimension follows automatically.
Frequently Asked Questions
How does the aspect ratio lock work?
Enter either width or height and the other is calculated for you. If you type both while the lock is on, width wins and height is recalculated.
Can I resize by percentage?
Yes. Enter a percentage to scale both dimensions together.
Is there a size limit?
Images up to 50 MB and 40 megapixels are accepted. Larger ones are refused to protect your browser from running out of memory.