RRB Group D Signature Resizer
RRB Group D captures the photo live and asks you to upload the signature as a 30 to 49 KB JPG, at least 140 x 60 pixels at 100 DPI or more, in black ink running handwriting.
Free, no sign-up. Your photo never leaves your device.
Photo
Live capture
Taken by camera in the form, not uploaded
Signature
30 to 49 KB
350 x 200 px, JPG
Official rules
RRB Group D signature size
RRB Level 1 (Group D) posts, conducted by the Railway Recruitment Boards (RRB). Upload rules from CEN 09/2025 (Level 1), detailed notice of 30 January 2026:
| Document | Size in the notification | File size | Format | This tool makes |
|---|---|---|---|---|
| Signature | at least 140 x 60 pixels, 100 DPI or more, in a 35 x 20 mm box | 30 to 49 KB | JPG | 350 x 200 px |
Rules last checked on . Official website
The tool checks the file it makes against these numbers. A passing file is not a guarantee that the RRB Group D portal will accept it.
Good to know for RRB Group D
- The photo is captured live by webcam or the phone's front camera. Old photos are not accepted.
- Do not sign in block or capital letters. The signature should fit a 35 x 20 mm box.
Step by step
How to resize the RRB Group D signature
- 1
Sign on white paper
Sign with a black pen on plain white paper and take a clear picture of it. The RRB Group D size and KB range are already selected.
- 2
Add your picture
Choose the picture from your gallery or take a new one. JPG, PNG, WebP and iPhone HEIC pictures work.
- 3
Crop and adjust
Drag and zoom until the signature fills the box with a little white space around it. Raise the contrast if the ink looks pale.
- 4
Make and download
Press Make. The file comes out inside the allowed KB range, and the tool checks the downloaded file itself: format, KB, pixels and print size for the RRB Group D form.
Avoid mistakes
Why RRB Group D uploads get rejected
- The signature is outside 30 to 49 KB, or it is a photo of the whole page instead of a close crop of the signature.
- The signature is blurred, very small inside the picture, or written in capital letters.
- It was signed on lined or coloured paper, or with a pencil or a light pen.
- For the live photo: poor light, a busy background, a cap, mask or glasses, or the face partly outside the frame.
- For the live photo: a picture of an old printed photo or of a screen held in front of the camera.
Tips for a clear signature
- Sign a little larger than usual with a black pen on plain white paper, so the signature stays sharp in a small file.
- Photograph it from straight above in daylight. A tilted or shadowed picture looks blurred once it is made small.
- Crop close: the signature should fill most of the frame, with a thin white margin.
- Before the live photo, sit facing a window in front of a plain wall, keep the phone at eye level and remove cap, mask and glasses.
- Use the same signature you will make at the RRB Group D exam centre; a mismatch can cancel the candidature.
FAQ
RRB Group D signature FAQ
What is the RRB Group D signature size?
at least 140 x 60 pixels, 100 DPI or more, in a 35 x 20 mm box, as a JPG file of 30 to 49 KB. The tool makes it 350 x 200 px. Sign with a black or dark blue pen on plain white paper.
What is the RRB Group D signature size?
A JPG of 30 to 49 KB, at least 140 x 60 pixels, scanned at 100 DPI or more. The tool makes it 350 x 200 pixels, the shape of the 35 x 20 mm box.
Do I need a photo file for RRB Group D?
No, the photo is taken live with a webcam or the phone's front camera during the application.
Are these RRB Group D rules up to date?
They were last checked on 2026-10-24 against CEN 09/2025 (Level 1), detailed notice of 30 January 2026. Rules can change with every notification, so compare them with the latest one on the official website before you upload.
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