Image Resize
Resize and convert images locally using your browser's canvas. Set width and height with an optional aspect-ratio lock, choose WebP, JPEG or PNG output, and download the result — nothing is uploaded.
Resize and convert images locally with canvas, with no uploads.
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How to use Image Resize
- Choose an image file from your device.
- Enter a width and height, or lock the aspect ratio and change one dimension.
- Select the output format and quality (for WebP/JPEG).
- Preview the result, then click Download to save it.
Frequently asked questions
Are my images uploaded?
No. Resizing and conversion run entirely in your browser using the canvas element.
What is the maximum dimension?
Each side is limited to 8000 pixels and the total pixel count to 16777216 (16 megapixels) to keep processing fast and avoid browser memory issues.
Which formats can I export?
WebP, JPEG and PNG. Quality control applies to WebP and JPEG exports.
Can I keep the original aspect ratio?
Yes. Enable the aspect-ratio lock, then changing width or height updates the other automatically.