Resize Image to 20KB

Yes, for a passport-style photo. At sizes like 200 × 230 or 350 × 450 pixels, 20KB is enough for a sharp face. Problems usually come from starting with a blurry or dark photo, not from the size limit, so use a well-lit photo against a plain light background.

Computers often round sizes, and websites count KB differently (1,000 or 1,024 bytes). A file that shows as “20 KB” may really be 20.4 KB. Our result stays under 20,000 bytes and shows the size rounded up, so what you see is never smaller than the real size.

Only if you set an exact pixel size. The tool fits the photo to the width and height you give, so a photo with a different shape would look stretched. Crop it to the right shape first with our Crop Image tool. Without an exact size, the shape is always kept.

DPI is a label inside the file that says how large it should print. It does not change the KB or the pixels. Some forms check it, typically asking for 200 or 300 DPI. Leave it on “Don't change” if your form does not mention DPI.

Yes. Signatures usually have a smaller limit, often 10–20KB or under 10KB, and a wide shape such as 140 × 60 pixels. Set those values here, or use the 10KB tool.

Yes. It is built for phones first and works in Chrome, Safari and Firefox, including on low-cost Android phones. Large photos take a few seconds longer on older phones.