Image Resizer & Converter
Resize images and switch format.
Drop an image, or click to choose
Resized and re-encoded on a canvas in this tab.
Upscaling works but can't add detail. JPEG flattens transparency to black — choose PNG or WebP to keep an alpha channel.
About this tool
Resize any image to exact dimensions with aspect lock, and convert between PNG, JPEG and WebP with quality control — processed locally on a canvas.
It runs completely in your browser — no input is sent anywhere, and this page loads no ads or third-party scripts, so it is safe to use with data you would not paste into a hosted service.