Compress image

How to use it

1. Choose or drop your images.
2. Keep the format or switch to JPG or WebP.
3. Set the quality and, optionally, the largest size in pixels.
4. Compress and download; each file’s old and new size is shown.

Your images are not uploaded

Your browser opens the image, does the work in this tab, and saves the result back to your device. Nothing is sent to Sellstamp or anyone else, so there is no upload to wait for and no copy on a server afterwards.

The three levers

Pixels matter most: a 6000-pixel photo shown on a website at 1200 pixels carries 25 times the pixels it needs, so capping the size usually saves the most. Quality is next: 75 to 85 is where JPG and WebP get much smaller without visible change. Format last: WebP is usually smaller than JPG at the same quality.

When nothing can be saved

A file that is already tightly compressed may come out larger. When that happens and you did not ask for a new size or format, your original is kept and the page says so. PNG stays lossless here, so it shrinks only when you cap its size or switch to WebP or JPG.