Resize Images Online for Free
The Image Resizer lets you change the dimensions of any image in seconds. Every operation runs entirely within your browser — your images are never uploaded to a server.
Pixel-Perfect Control and Percentage Scaling
You have two flexible ways to resize your images. In pixel mode, enter exact width and height values. In percentage mode, scale images proportionally. The aspect ratio lock ensures your images never appear stretched.
Built-In Social Media Presets
One-click presets for Instagram Post (1080×1080), Instagram Story (1080×1920), Facebook Cover (820×312), Twitter Header (1500×500), and YouTube Thumbnail (1280×720).
High-Quality Output
Uses the HTML5 Canvas API with high-quality bicubic interpolation. JPEG images are exported at 92% quality. PNG images preserve full lossless transparency.