Image Compressor
Reduce image file size locally.
Free converter
Image Resizer
Resize an image to a chosen width while keeping its original aspect ratio.
Images are processed only in your browser. CorelyUp does not upload, store or inspect your files.
How to use this tool
Set a new width in pixels and download a browser-processed copy.
Transparent method
Formula and method
New height = original height ÷ original width × requested width.
Example
A 2400 × 1600 image resized to 1200 pixels wide becomes 1200 × 800 pixels.
Assumptions and limits
- Aspect ratio is preserved.
- Images are processed locally.
Frequently asked questions
Can I set a height too?
This version uses width only to avoid accidental stretching.
Related guides
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Image Format Converter
Convert images between JPEG, PNG and WebP.