Free Online Image Resizer
Resize PNG, JPEG and WebP images to exact pixel dimensions, preserve aspect ratio, and download the result without uploading.
Open Image ResizerHow to use Image Resizer
- Select a PNG, JPEG or WebP image.
- Set the target width. With aspect ratio locked, height is calculated from the source image.
- Turn off the lock for exact width and height, then resize and download the PNG.
What this tool does
Resize PNG, JPEG and WebP images to exact pixel dimensions, preserve aspect ratio, and download the result without uploading.
Your input is processed in your browser and is not uploaded by this tool.
A smaller pixel canvas can reduce page rendering and layout costs. This tool uses browser image decoding and high-quality canvas resampling, then exports PNG so resize settings are independent of lossy compression. Enter both dimensions only when stretching is intentional. It does not crop the image.
Before you start
- No account is required to open the tool.
- Check the supported input formats and limits on the tool page.
- Review generated or estimated results before relying on them.
Does locking the ratio use both dimensions?
No. Width controls the output and height is derived from the source ratio. Unlock it to use both width and height.