How to Resize Images Online

Change image dimensions with professional-quality Lanczos resampling. This algorithm provides the best results for both upscaling and downscaling, with sharp edges and minimal artifacts.

Features

• Lanczos resampling — Highest quality resize algorithm
• Lock aspect ratio — Maintain proportions automatically
• Quick presets — Common sizes with one click
• Scale by percentage — 50%, 25% options
• Unsharp mask — Automatic sharpening for crisp results

Need to Enlarge?

For best enlargement results, try our AI Upscaler which uses neural networks to add detail while upscaling 2x or 4x.