Compress Image to 20KB: Signature and Small Photo Compressor

Compress Image to 20KB: Signature and Photo Compressor

The 20KB limit is almost exclusively used for digital signatures in government exam applications. UPSC, SSC, and most banking recruitment portals require your scanned or digitally captured signature to be under 20KB. Some portals also use this limit for a small thumbnail photo. Getting the signature file size exactly right is critical. Even 21KB will be rejected by an automated portal check.

Which Portals Require 20KB Signatures?

• •UPSC Civil Services Preliminary: Signature must be under 20KB (JPG, 140×60 pixels).
• •SSC All Exams: Signature 10–20KB (140×60 pixels), scanned in black ink on white paper.
• •IBPS All Exams: Signature maximum 20KB (140×60 pixels, 200 DPI scan).
• •SBI PO and Clerk: Signature maximum 20KB.
• •RRB Exams: Signature 10–40KB depending on the recruitment notification.

How to Prepare Your Signature for Government Applications

1. 1Sign on white paper using a black or dark blue pen with a medium tip.
2. 2Scan at 200–300 DPI or photograph under good, even lighting with no shadows.
3. 3Crop to include only the signature (approximately 140×60 pixels area minimum).
4. 4Upload to this tool and compress to 20KB. Download and upload to the portal.

Important: UPSC Signature Specifications

UPSC is particularly strict about signature uploads. The signature must be on a white background (not blue, yellow, or grey), signed in black or dark blue ink, legible and matching the signature on your physical ID, and compressed to under 20KB in JPG format. Applications with unclear, digital-looking, or all-caps signatures may face scrutiny during the document verification stage.

Why is the Limit So Small?

Signature images are displayed as small thumbnails on admit cards and in the examination system. They don't need high resolution, just legibility. 20KB is more than sufficient for a 140×60 pixel signature image at standard JPEG quality. The small limit reflects the tiny display size, not a technical limitation.

Frequently Asked Questions