Image Resizer

Resize images to any width or height while preserving aspect ratio.

Enter a target width, height, or both. Aspect ratio is always preserved unless you specify exact dimensions.

Resizing images is one of the most common tasks in web development and content creation. Whether you're preparing thumbnails for a blog, sizing profile pictures for a platform, or reducing large images before uploading to a CMS, getting the dimensions right matters.

Our resizer uses Sharp's high-quality Lanczos3 algorithm, the gold standard for downscaling — it produces crisp results without the haloing or blurring of simpler algorithms. When upscaling, it uses bilinear interpolation for smooth, clean results.

Specify only one dimension to resize proportionally with the aspect ratio perfectly maintained. Specify both width and height to fit the image inside that box — the image is scaled down to fit without stretching.