resizePNG

A simple image resizer that runs entirely in your browser. No uploads, no servers, no tracking.

Features

• 100% Local Processing - All resizing happens in your browser. Your images never leave your device.
• Drag & Drop - Simply drag an image onto the page or click to browse
• Multiple Format Support - Accepts PNG, JPG, JPEG, and WebP files
• Aspect Ratio Lock - Maintain proportions or resize freely
• Live Preview - See original and resized images side-by-side
• High-Quality Downscaling - Uses progressive step-down algorithm for better results
• Upscale Warning - Alerts you when resizing may reduce quality
• PNG Export - Always exports as PNG format

Usage

1. Open image-resizer.html in any modern browser
2. Drag and drop an image or click to browse
3. Enter your desired width and/or height (1-10000 px)
4. Toggle the aspect ratio lock if needed
5. Click Download PNG to save your resized image