Resize Image to 20KB

Many online forms – exam registrations, job portals, visa and government applications – only accept photos and signatures below a size such as 20 KB. This tool compresses your image to fit: it tries the highest JPEG quality that stays under your limit and, only if that is not enough, reduces the pixel size step by step. You see the final size, dimensions and a preview before you download. All of it happens in your browser, so your photo, ID picture or signature is never uploaded to a server.

Check the form's rules first: besides the file size, many forms ask for specific dimensions (for example 200 × 230 pixels) or a minimum size such as 10 KB. Enter the required width or height in the max width/height box so the result matches. Crop your photo to the right shape before resizing – a tightly cropped face or signature keeps more detail at 20 KB than a large photo with lots of background. Scan signatures on plain white paper in good light for the cleanest result.

JPG is accepted everywhere and is the safe choice for forms. WebP gives better quality at the same size, but many upload forms still reject it – only choose WebP when you know the website accepts it. Transparent areas of PNG images are filled with white, because JPG does not support transparency.

The same tool works for any limit: tap 10, 30, 50, 100, 200 or 500 KB, or type an exact number. If a form gives the limit in kilobytes as 1000 bytes instead of 1024, choose a slightly smaller target to be safe.