Resize an Image
Set exact pixel dimensions or scale by percentage, with aspect ratio locked.
Upload limits, avatar requirements and page-speed budgets all come down to pixel dimensions. Resize by exact width and height or by percentage, with the aspect ratio locked by default so nothing stretches. The image is decoded and redrawn using your browser's canvas, and the result previews instantly before you download it.
Drop an image to resize
JPG, PNG or WebP. The image is read from your device only.
Files stay on this device — nothing is uploaded.
Processing Happens in Your Browser
Processing happens locally on your device. Your file does not need to be uploaded to our processing server.
How it works
- 1
Add an image
Drop in a photo, screenshot or graphic.
- 2
Enter dimensions
Type a width or height, or scale by percentage.
- 3
Preview
The resized result and its file size are shown immediately.
- 4
Download
Save in your chosen output format.
Features and benefits
Aspect ratio lock
Change one dimension and the other follows, so nothing is distorted.
Percentage scaling
Halve or quarter an image without doing arithmetic.
Format conversion
Export as JPG, PNG or WebP in the same step.
Instant preview
See dimensions and resulting file size before downloading.
Supported formats and limits
JPG, PNG, WebP and most other formats your browser can decode; export as JPG, PNG or WebP.
Everything runs inside your browser tab, so the practical ceiling is your device's available memory rather than an upload limit. Documents up to roughly 100 MB work comfortably on a modern laptop; very large files are best handled a few at a time, and closing the tab clears all of it instantly.
Frequently asked questions
Related tools
Keep your documents on your own device
Every tool here works the same way: local processing, no upload, no account. Browse the full set or read exactly how the in-browser engine works.