A clear signature for exam forms

The bank figures are from an IBPS-format notice, the Punjab & Sind Bank recruitment notice of October 2024, which gives the pixels as preferred, asks for JPG or JPEG at 200 DPI or more, and warns that an unclear or smudged upload may be rejected. The SSC figure is from a secondary summary that also reports that blurred signatures are rejected; treat it as commonly cited, not as the commission's text.

A signature is checked by eye against the one on the admit card and at the exam hall. Grey paper, a shadow from the hand and strokes softened by repeated compression make that comparison unreliable, so notices reject the file rather than guess. The usual cause is not the photograph but what happens after it: a 3 MB phone photo squeezed to 15 KB by a compressor that lowers quality until the size fits.

Under a band's minimum is the less obvious failure: a clean signature at 140 × 60 pixels can be under 10 KB even at the best quality. It cannot be made larger without either padding the file with meaningless bytes, which this site does not do, or enlarging it in the same shape where the notice gives its pixels as preferred.

Sharpen a signature for an online form runs exactly this order in your browser and prints the final pixels and kilobytes. No page can promise that a particular authority will accept a file; it can meet the stated numbers.