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RRB Railway Signature Resizer
Get your signature into the RRB size of 35 × 20 mm and 30–49 KB. For NTPC, Group D, ALP, JE, Technician and other railway exams.
✓ No upload, 100% private✓ No sign-up✓ Works on phone & desktop
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Official requirements
| Document | Size | File size | Notes |
| Photograph | Taken live by the form | none | A photo of a printed or digital picture is rejected |
|---|
| Signature | 35 × 20 mm box, at least 140 × 60 px | 30–49 KB | Running handwriting, black ink, white paper, not block or capital letters |
|---|
All files are JPG/JPEG. Checked against the RRB Centralised Employment Notice (2026) in November 2026. Rules can change between exam cycles, so compare with your own notice before you submit.
Taking the live photo in the form
The form also asks you to take a live photo with your webcam or phone camera. You can't upload a file for it, but a few things make it pass the first time:
- Face a window or a bright light. Don't sit with a window behind you.
- Stand in front of a plain white or light wall.
- Take off caps and dark glasses. Look straight at the camera with your face and ears visible.
- Hold the phone at eye level, about an arm's length away, so your face fills most of the frame.
- Never take a photo of an old printed photo. Forms reject it.
Frequently asked questions
Quick answers about the rrb railway exams tool.
What is the RRB signature size?
A JPG of 30–49 KB, inside a 35 × 20 mm box and at least 140 × 60 pixels. The tool makes it 35 × 20 mm at 200 DPI.
Do I upload a photo for RRB?
No. The form takes a live photo with your camera. Photos of printed pictures are rejected.
My signature is only 8 KB. Is that a problem?
Yes, it must be at least 30 KB. The tool raises the quality and adds harmless padding until it is inside 30–49 KB.
Is my signature uploaded?
No. Everything stays in your browser.