RRB NTPC & Group D Signature Resizer
Railway Recruitment Board forms want a much larger signature file than bank or SSC forms: 30 to 49 KB. The photo is captured live during the application, so the signature is the image you upload. Drop a scan or photo of it below.
- Runs on your device
- No sign-up
- Free, no watermark
This page opens the Exam Photo & Signature Resizer with the settings for this task. You can change any of them above.
RRB signature and photo rules (NTPC 2026, Group D)
| Item | Requirement |
|---|---|
| Signature format | JPG / JPEG |
| Signature file size | 30 to 49 KB |
| Signature dimensions | At least 140 × 60 px |
| Scan resolution | 100 DPI or more |
| Layout | Centred within a 35 mm × 20 mm box |
| Ink and style | Black ink on white paper, running handwriting; no capital or separate letters |
| Photo | Captured live during the application; no photo is uploaded |
| SC/ST certificate (free train pass) | PDF under 400 KB |
- A thumb impression in place of the signature is a ground for rejection.
- Group D (CEN 09/2025) uses the same signature rules; its live-photo instructions are shorter than NTPC's.
Sources: RRB CEN 06/2026 NTPC (Graduate); RRB CEN 07/2026 NTPC (Undergraduate); RRB CEN 09/2025 Group D. Requirements can change with each new notice, so check the one for your exam before you apply.
How to use the RRB Signature Resizer
- 01Sign in running handwriting with black ink on white paper, then scan it or take a sharp photo from straight above.
- 02Drop the image into the tool. RRB signature is already selected.
- 03Move the crop box so the signature sits in the middle with a little space around it.
- 04Press Create JPG, check that the size is between 30 and 49 KB, and download the file.
Good to know
30 to 49 KB
Quality stays under 49 KB. A small file gets invisible padding to reach 30 KB, so the picture isn't changed.
413 × 236 px at 300 DPI
That's 3.5 × 2.0 cm, the 35 × 20 mm box in the notice, and well above the 140 × 60 px and 100 DPI minimums.
Runs on your device
Your signature is cropped and compressed in your browser. It's never uploaded.
Frequently asked questions
What is the RRB NTPC signature size?
JPG or JPEG, 30 to 49 KB, at least 140 × 60 pixels, scanned at 100 DPI or more. Sign in black ink on white paper and keep the signature centred in a 35 mm × 20 mm area. This is in the NTPC notices CEN 06/2026 and 07/2026 and the Group D notice CEN 09/2025.
My signature is only 10 KB. How does it reach 30 KB?
A clean signature on white paper compresses very well, so it's often under 30 KB even at full quality. The tool adds invisible padding inside the JPG to take it over 30 KB. The picture stays the same and the file opens normally.
Can I sign in capital letters?
No. RRB asks for your signature in running (joined) handwriting, not in block, capital or separate letters. A thumb impression instead of a signature is a ground for rejection.
What about the photo?
RRB doesn't take an uploaded photo: it's captured live during the application. The NTPC notices ask for a plain white background, dark plain clothes covering your shoulders and chest, your head filling at least half the photo, and no cap, mask or spectacles.
Is my signature uploaded to OptiPress?
No. It's cropped, resized and saved as JPG in your browser, and it never leaves your device.