Free online tools
Image Resizer
Resize images by width and height with aspect ratio control.
Use the tool
Drop or choose a file here
Runs in your browser — files never leave your device.
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Other languages
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Open in Korean
Korean version
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Open in Japanese
Japanese version
Frequently asked questions
Does this tool send my input to AsKrs?
Most tool pages run directly in the browser and are designed for quick local work.
What should I check before copying or downloading the result?
Review the preview, file name, format, size, and any warning message first.
How do I know the Image Resizer result is ready to send or upload?
The result shows whether the image is now compatible with the target platform while keeping enough visible quality or the expected dimensions.
What usually goes wrong after exporting from Image Resizer?
Check aspect ratio, transparency, orientation, and text legibility before assuming the converted or compressed image is ready.
Can I keep the original ratio?
Yes.