IBPS Photo, Signature & Thumb Impression Size 2026

Last updated: July 2026

Bank recruitment through IBPS asks for one document that catches almost every first-time applicant off guard — a scanned left thumb impression, on top of the usual photo and signature. This guide covers the exact specification for PO, Clerk, SO and RRB Office Assistant applications, and explains why banking exams uniquely require this extra biometric-style document.

IBPS Photo, Signature & Thumb Impression Specification

This specification applies across the common recruitment process for Probationary Officer (PO), Clerk, Specialist Officer (SO) and RRB Office Assistant — the four broad categories IBPS recruits for on behalf of nearly every public sector bank in India.

Why Banking Exams Ask for a Thumb Impression

The left thumb impression requirement is fairly unique to banking-sector recruitment compared to UPSC, SSC or RRB. Banks handle sensitive customer financial data from day one of employment, so IBPS builds in an extra layer of identity assurance beyond the usual photo and signature. The thumb impression acts as a biometric-style reference that is cross-checked at the exam centre, again during document verification, and once more at the time of joining — helping banks confirm that the same person who registered is the one who eventually takes up the role. This is also why IBPS is consistent about wanting the left thumb specifically: standardizing on one hand means verification staff always compare the same reference point regardless of whether a candidate is left- or right-handed.

How to Capture a Clean Thumb Impression

Press your left thumb evenly onto an ink pad — not too much ink, which smudges, and not too little, which leaves gaps — then stamp it firmly on a clean sheet of plain white paper. Let the ink dry fully before photographing it in good, even lighting, holding the camera directly overhead rather than at an angle to avoid distortion. Crop the photo close to the impression itself before resizing to 240×240px, since IBPS reviewers need to see clear ridge detail, not just a dark smudge. A common mistake is submitting a photograph of the bare thumb itself rather than an actual ink impression on paper — IBPS specifically wants the stamped impression, not a photo of your thumb.

The Handwritten Declaration Requirement

Beyond the photo, signature and thumb impression, many IBPS recruitment notifications also ask candidates to handwrite a specific declaration sentence exactly as worded in the notification — typically something affirming that all the information provided in the application is true — sign it, and upload it as a scanned image. This is a separate document from your regular signature and should not be confused with it. Since the exact wording changes with each notification, always copy the declaration text precisely as given rather than paraphrasing it, and check the specific pixel and file size instructions for this document in that year's notification, since it can differ slightly from the standard photo and signature specification.

Preparing All Three Documents Together

Since IBPS applications need three separate scanned images at three different pixel sizes, it saves time to prepare all of them in one sitting — take your photo, sign your signature, and stamp your thumb impression before you sit down to fill the online form. If you're also applying to SSC or RRB exams in the same season, your source photo and signature can often be reused across applications — you'll just need to resize each one to that specific exam's dimensions. For any custom-sized document, like the handwritten declaration, our general-purpose image resizer lets you enter any pixel size and file weight the notification asks for.

Frequently Asked Questions