How to Resize Your SSC Signature to Under 20 KB (300×80 px)

Guide • Updated: 2026-11-11 • Free, in your browser — your photos are never uploaded

Almost every government job form in India and Bangladesh — SSC, UPSC, IBPS, Railways — asks for the same thing: a scanned signature that is under 20 KB. Upload a bigger file and the form simply rejects it. The good news is that fixing it takes about two minutes, and you do not need a studio or any paid software.

This guide shows you the exact size, how to prepare a clean signature, and how to shrink it to under 20 KB without making it blurry.

Quick facts — SSC / UPSC / IBPS signature

Size: 300×80 px or 140×60 px
File size: 10 KB – 20 KB (strictly under 20 KB)
Resolution: 200 DPI
Paper: pure white paper, dark black or dark blue ink
Quality: high contrast, no shadows or grain

Step 1: Sign on plain white paper

Take a clean sheet of white paper — not lined, not coloured — and sign in the middle with a dark black or dark blue pen. Keep your signature compact, about the width of your palm. A thin, light signature compresses badly, so press firmly and sign the way you normally do.

Step 2: Scan it, or photograph it well

A scanner is best, but a phone camera works fine. Place the paper flat in bright, even light — near a window in the daytime is ideal. Hold the phone directly above the paper, not at an angle, and make sure there is no shadow from your hand or the phone. The scan should show black ink on clean white paper, nothing else.

Step 3: Crop tight around the signature

Crop away all the empty paper. The signature itself should fill most of the frame, with only a small white margin around it. Extra white space is wasted file size, and it makes your signature look tiny when the form displays it.

Step 4: Resize to 300×80 px

Open ResizeHub’s Signature Resizer, upload your cropped signature, and set the size to 300×80 px. This is the standard size for SSC, UPSC and IBPS forms. If your form asks for 140×60 px instead, use that — both are accepted sizes, so follow your own form’s notification.

Step 5: Compress to under 20 KB and download

Set the file-size target to 20 KB and let the tool compress the image. It lowers the quality step by step until the file fits under the limit, while keeping the signature sharp. Download the result as a JPG and check the file size before you upload it to the form — it should read somewhere between 10 KB and 20 KB.

Common mistakes to avoid

Signing on coloured or lined paper — the lines and colour add noise and file size.
Photographing in dim light — grey, grainy backgrounds compress badly and look dirty.
Uploading the full A4 scan — a whole page is far bigger than 20 KB and will be rejected.
Using a photo of your signature taken at an angle — the signature comes out slanted and stretched.
Re-compressing an already small file — start from your clean scan every time, not from an old compressed copy.

That is all there is to it. One clean signature on white paper, cropped tight, resized to 300×80 px and compressed under 20 KB will pass the SSC, UPSC, IBPS and Railway forms. Your photos are processed entirely in your browser — nothing is uploaded anywhere.