Sign on plain white paper with a dark pen, photograph it in daylight, and drop the photo on the signature page. The paper is evened out, the ink separated from it by its grey level, and the result cropped close and straightened. Choose the form and the ink colour is set, the signature is drawn at the form’s size, and the JPG quality is searched until the file is inside the window. The note gives the size in KB of the file that downloaded.
No model and no upload are involved: it is arithmetic on the pixels in the page, so it is instant on any phone.
- Why is my signature file too small for the minimum?
- A signature is mostly white paper, and white compresses to almost nothing. A JPG of a cropped signature can be 6 KB at full quality. Raising the quality helps only so far; a larger pixel size or a slightly bigger crop around the ink is what adds the bytes honestly. The page reports when a floor cannot be met rather than padding the file with filler.
- Why does UPSC want three signatures?
- So the signature can be compared with itself. Sign three times, one under another, on white paper. The signature page has a three-signature mode: add each photo and they are stacked in black ink in one file inside 20 to 100 KB.
- Blue or black ink?
- Whatever the notice says. UPSC and PAN ask for black; SSC accepts black or blue. With a form chosen, the page sets the ink for you, whatever colour the pen was.
- My photo has a shadow across the page. Does that matter?
- It used to. The page evens out the paper before it separates ink from paper, dividing each pixel by a smooth estimate of the page around it, so a lamp's shadow does not survive as a grey smudge. A tilted signature is straightened by up to 15 degrees.