Use Image Resizer online for free. Fast, client-side processing directly in your browser with zero file uploads to external servers.
All processing occurs 100% on your device using client-side WebAssembly. No files are uploaded to our servers.
Keep the "Lock Aspect Ratio" toggle checked. When you change width, height automatically scales proportionally.
Yes! Use our preset dimensions or type custom sizes for YouTube (2560x1440), Facebook (1200x630), or Instagram (1080x1080).