Home › File size (KB, MB) › Resize image to 20KB online
File size (KB, MB)Upload a photo or signature and get a file under 20 KB, ready for the form.
Turn this off if the form needs an exact pixel size. It turns off by itself when you type a width or height.
Leave empty to resize without a size limit.
How it works
20 KB is the limit you meet most often on signature uploads, and sometimes on small ID photos. It is tiny, so the tool works in two steps: it reduces the pixel size a little, then lowers the JPEG quality until the file just fits under 20 KB.
Dark ink on white paper shrinks very well. A detailed colour photo does not, because there is more to squeeze out. If your result looks blurry, start from a smaller or better lit original, or check whether the form really needs 20 KB.
The picture is probably very large or very detailed. Lower the width and height, then resize again.
Yes, if it is dark ink on white paper. Photos lose more detail at this size.