RRB NTPC / Railway Photo & Signature Size 2025 — Complete Guide
Railway Recruitment Board (RRB) exams including RRB NTPC, RRB Group D, RRB ALP, and RRB JE have unique photo requirements including a minimum DPI specification and a strict black ink-only rule for signatures. This guide covers all the official specifications.
📷 Photo Specifications
| Dimensions | 320 × 240 px |
| File Size | 30–70 KB |
| Format | JPG / JPEG |
| Background | Plain white ONLY |
✍️ Signature Specifications
| Dimensions | 140 × 60 px |
| File Size | 30–70 KB |
| Format | JPG / JPEG |
| Ink Color | Black or blue ballpoint pen |
Free RRB NTPC / Railway Photo & Signature Size 2025 Resizer
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Important Rules & Special Requirements
- White background is MANDATORY for RRB photos — any other background color causes rejection.
- Minimum 100 DPI is required for both photo and signature.
- Signature must use BLACK INK ONLY — blue ink signatures are explicitly rejected.
- Cursive/running handwriting only — block or capital letters are rejected.
- Face must cover 50–60% of the image area.
Common Mistakes That Lead to Rejection
✅ Solution: RRB requires strictly white background. No cream, light blue, or grey.
✅ Solution: RRB explicitly rejects blue ink. Use a black ballpoint pen only.
✅ Solution: Scan at minimum 100 DPI or take photo with a good smartphone camera.
✅ Solution: Our tool auto-compresses to the 30–70KB range.
Step-by-Step Guide
- 1Take a color photo against a strictly white background.
- 2Ensure minimum 100 DPI — use a good smartphone camera or scanner.
- 3Select 'RRB NTPC / Railway' from the exam dropdown above.
- 4Upload, crop to 320×240 proportions, and process.
- 5For signature: use a BLACK ballpoint pen on white paper. Do NOT use blue ink.
- 6Sign in cursive — not block letters or capitals.
- 7Scan signature at 100+ DPI or photograph clearly.
- 8Process with 'Signature' toggle selected.
Frequently Asked Questions
Q.What is RRB NTPC photo size?
A. RRB NTPC photo must be 320×240 pixels, 30–70KB, JPG format, white background only, minimum 100 DPI.
Q.Can I use blue ink for RRB NTPC signature?
A. No. RRB explicitly requires BLACK ink only for signatures. Blue ink signatures are rejected outright.
Q.What DPI is required for RRB photos?
A. RRB requires a minimum of 100 DPI for both photo and signature. This is one of the few exams with an explicit DPI requirement.
Q.Is RRB NTPC and RRB Group D photo size the same?
A. Yes, all RRB exams (NTPC, Group D, ALP, JE) follow the same photo specifications: 320×240 pixels, 30–70KB, white background, 100 DPI.
Q.Why is my RRB photo getting rejected?
A. Common reasons: colored background (only white is accepted), blue ink signature, low DPI, file size outside 30–70KB, or signature in capital letters.