Compress Image to 20KB

Compressing a form photo or signature to under 20 KB

Online applications that limit a photo or signature to 20 KB may also state pixel dimensions, and the order matters: set the pixels first, then compress. A photo already sized to the form's dimensions reaches 20 KB at a much higher quality than a full-size phone photo that the compressor has to shrink on its own.

This page is set to 20 KB with JPG output, which upload forms widely accept. The compressor tries quality levels until the file fits, and when quality alone cannot get there, it narrows the image by 20% per step. That automatic shrinking keeps the proportions but ignores any size the form requires, so resize to the exact pixels the form names before compressing whenever it lists them.

For a face photo, check that the eyes and hairline are still clear and that the background has not turned blotchy; a plain, evenly lit backdrop compresses far better than a patterned wall. Collecting photos from several applicants at the same limit? Premium batch mode applies the 20 KB target to every file and returns one ZIP. Because the tool's kilobyte is 1,024 bytes, a strict form that counts 1,000 bytes per KB may need a target of 19.