Image Resizer
Change the dimensions of an image right in your browser. Set width and height, optionally locking the aspect ratio.
Features
How to Use
1. Drag an image onto the upload area, or click to choose a file.
2. Type a new width and/or height.
3. Toggle Lock Aspect Ratio if you want to keep proportions.
4. Click Resize, then Download the new image.
About this tool
Uploading a 4000-pixel photo where a 1200-pixel one would do wastes bandwidth and can be rejected by forms with size limits. This resizer changes an image's pixel dimensions in your browser: enter a width or height, keep the aspect ratio locked so the other side follows automatically, preview the result and download it. Scaling down is where resizing shines, because the browser averages neighbouring pixels and the smaller image stays crisp. Scaling up cannot invent detail, so enlarged images look soft. Resizing is different from compression — fewer pixels usually means a smaller file, but for the smallest size also compress the result as JPEG or WebP at a sensible quality.