File ToolsRuns in your browser
Image Resizer
Resize images to any width and height in your browser. Lock aspect ratio and export to JPG, PNG or WebP.
Drop a file here, or
JPG, PNG, WebP — processed in your browser.
How it works
The resizer draws your image onto an HTML5 canvas at the new dimensions, then exports the canvas to your chosen format. The aspect-ratio lock keeps proportions in sync.
- Resizing down is fast and visually lossless for moderate reductions.
- Output as PNG to keep transparency.
- Output as JPG for the smallest files when transparency is not needed.
Examples
Common targets:
- Instagram post: 1080×1080 (1:1)
- Twitter/X header: 1500×500 (3:1)
- YouTube thumbnail: 1280×720 (16:9)
- Web hero image: 1920×1080 (16:9)