NTPC (Graduate Level) Signature Size
Requirements (2026)
Complete official signature specifications for Railway Recruitment Board 2026 application. Signatures that don't meet these rules will be rejected by the upload portal.
Official RRB Signature Specifications
| File Size | 30KB – 70KB |
| Format | JPEG / JPG |
| Dimensions | 590 × 236 pixels |
| Ink Color | blue or_black |
| Paper | Plain white (no lines, no ruled paper) |
Additional Requirements
- Must be in running handwriting, not block/capital letters.
- Scanned signature must strictly fit within a 50mm x 20mm physical box.
- Sign on plain white paper with black or blue ink.
Why Signatures Get Rejected on the RRB Portal
Signature exceeds 70KB
High-resolution phone scans often exceed 70KB. The portal blocks any file above this limit.
Wrong ink color used
RRB mandates blue or_black ink. Blue or pencil signatures are a common rejection reason.
Signed on lined or ruled paper
Notebook lines visible in the scan are treated as tampering. Always use plain, unruled white paper.
Frequently Asked Questions
What is the exact signature file size for NTPC (Graduate Level) 2026?
The official signature file size for NTPC (Graduate Level) is 30KB to 70KB in JPEG/JPG format. Dimensions must be exactly 590 × 236 pixels.
What ink color is required for RRB signatures?
RRB requires signatures in blue or_black ink on plain white paper for the 2026 application process.
Can I use a digital signature for NTPC (Graduate Level)?
Most government exam portals do not accept digital signatures. You should sign on plain white paper with blue or_black ink, scan or photograph it, and then use our compressor to meet the exact size requirements.
Need to Compress Your Signature?
Our free tool automatically compresses your signature scan to meet the exact RRB 2026 specifications listed above.
Use RRB Signature Compressor