Free · No signup · Files stay on your device
Image Resizer.
Set the pixel width or height you need for a website, product listing or social post. Preserve proportions or choose exact dimensions.
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How to use Image Resizer
- Choose your image.
- Set width and height; keep aspect ratio enabled to avoid stretching.
- Resize and download your new image.
Limits and useful details
One PNG, JPEG or WebP image at a time, up to 20 MB and 32 megapixels, with an 8,192-pixel maximum side. Animated images, HEIC and SVG are not supported. Outputs are re-encoded: animation and most metadata are removed. JPEG replaces transparency with white.
The file contents are processed locally. Sharing this tool shares its public page link, never your selected file. Always inspect your download before using or sharing it.
Frequently asked questions
Does enlarging an image improve its quality?
No. Enlarging adds pixels through browser interpolation and does not recover missing detail. For sharper results, start with an original image at least as large as the required output.
Is this image tool free?
Yes. Processing takes place in your browser without an account or a paid API. Your image is not uploaded to Gencyh.
Which image formats are supported?
PNG, JPEG and WebP input images are supported. You can download PNG, JPEG or WebP where your browser supports encoding it. HEIC, SVG, GIF and animated images are not supported.
