Compress JPG photos with sizes you can rely on

It reads how your JPG was saved

A JPG has already been compressed once, and how much more it can lose depends on the quality it was saved at. ToolGPT reads that quality from the file itself before it estimates anything. With that number, the size on each option is a ceiling: the new file will be no larger, and it usually comes out smaller.

Because of this, an option that cannot help is not shown. If a JPG was already saved at about the quality the High quality option uses, re-encoding it would cost sharpness and add bytes, so that option is left out. If no option can make the photo smaller, ToolGPT tells you why, and a smaller pixel size is usually the way forward.

Fit a photo under a size limit

Upload forms often ask for a photo under a set size, such as 200 KB or 1 MB. Name the limit, and ToolGPT lowers the JPEG quality one step at a time until the photo fits. It keeps the pixel size you chose, and it does not go below quality 30.

If the photo still does not fit, you get the smallest size it reached instead of a file that breaks the limit. The usual fix is to make the photo smaller in pixels too, for example half its width, and try again. A size limit applies to one photo at a time.

What changes, and what does not

The compressed photo is a new JPG by default, or a WEBP if you ask, which is usually smaller at the same quality. Details stored inside the file, such as the date, the camera model and any location tag, are removed in the process. Your original file is never modified, and all of the work runs in your browser.