Learn the easiest way to reduce a photo's file size to any number of KB — set your target and download, all in your browser with no uploads.
Reduce to an exact KB, not a rough guess
Most photo editors let you lower quality with a slider, but they don't tell you the final file size until you export. When a form demands a specific number of KB, that guessing game is frustrating. A size-targeting tool flips it around: you name the KB you need and it does the math.
Try it now
Upload any image, type your target in KB, and download the reduced file. It works on JPG, PNG and WebP.
Try it now
Reduce Image Size in KB
How the size reduction works
The tool first lowers the JPEG quality using a smart search to find the highest quality that stays under your target. If even the lowest quality is still too big for a very small target, it also reduces the pixel dimensions until the file fits. This two-step approach means you always get a usable result.