How to Use
- 1
Upload a PNG, JPG, or WebP image by clicking the upload area or dragging it in.
- 2
Enter your desired width or height. Toggle the lock icon to maintain the original aspect ratio automatically.
- 3
Choose an output format (JPEG, PNG, or WebP) and quality, then click Resize & Download.
Frequently Asked Questions
Does the aspect ratio lock work automatically? ▼
Yes. When the lock is enabled, changing the width automatically recalculates the height to maintain the original proportions, and vice versa. Toggle the lock icon to resize freely without constraints.
What formats can I export to? ▼
JPEG (best for photos), PNG (best for transparency and graphics), and WebP (best for web - smaller files with great quality). WebP is supported in all modern browsers.
Is my image uploaded to a server? ▼
No. Resizing runs entirely in your browser using the HTML Canvas API. Your images never leave your device.
Can I upscale an image? ▼
Yes, you can enter dimensions larger than the original. Note that upscaling increases file size and does not add detail - the result may appear soft or pixelated. For best quality, resize down rather than up.