RRB Signature Size 2026 (NTPC, Group D, JE, ALP): Resize to Exact KB
Railway recruitment forms ask for a scanned signature, while the photograph is captured live in recent cycles. Resize your RRB signature to the exact size below.
RRB (NTPC / Group D / JE / ALP) photo and signature requirements
| Document | Size used by this tool | File size |
|---|---|---|
| Signature | 140×60 px | 30–49 KB |
Photo is captured live in recent cycles, so there is no photo file to upload. Reported signature limits differ between notices, so 30–49 KB is used: it passes a 49 KB ceiling and a 50 KB one.
The live photo: what the portal captures, and how to pass it
Because recent railway recruitment cycles capture your photograph through the webcam or front camera during the application itself, there is no photo file to prepare and nothing to resize. What there is instead is a short list of ways the capture goes wrong. Candidates tend to arrive at this step unprepared, because every other form they have filled asked for an upload.
- Sit against a plain white or very light wall. A patterned wall, a doorway or a curtain behind you can cause the capture to be refused.
- Wear something dark. A white or very pale shirt merges into a white background and leaves no clear outline of your shoulders.
- Remove a cap, a mask and spectacles before the capture begins, unless your notification says otherwise. These are the most common reasons a live photo is rejected on inspection.
- Fill the frame as the portal asks. Most capture screens draw an outline; your face should sit inside it rather than floating small in the middle.
- Face a window, or any light in front of you. A light source behind you turns your face into a silhouette.
- Do not photograph a printed photo, or your face on another screen. Holding an old passport photo or a phone up to the webcam is detectable and is treated as a false submission, not as a mistake.
Have this ready before you begin the form, because application portals time out. Hunting for a plain wall and a dark shirt halfway through a session is how people lose a half-completed application.
Live capture applies to recent cycles. Older notices, and some railway recruitment categories, did require an uploaded photograph. Check the CEN notification for the post you are applying to.
Tips to avoid rejection
- Sign in black ink on white paper in running (cursive) letters, not block or capital letters.
- Keep the signature inside a 50 mm × 20 mm box, about 140×60 pixels.
- Reported limits differ between notices, and some report a 49 KB ceiling for NTPC. This tool uses 30 to 49 KB, which stays inside a 49 KB limit and a 50 KB one. Confirm the figure on your own CEN notification.
How to resize for RRB (NTPC / Group D / JE / ALP)
- Pick the document from the list above.
- Upload your image.
- Check the green tick, then download the JPG.
- Upload it on the official application portal.
Frequently asked questions
What is the RRB signature size in KB?
Between 30 and 50 KB in JPG works for the reported limits.
What is the RRB signature size in pixels?
About 140×60 pixels (50 mm × 20 mm).
Do I upload a photo for RRB?
Recent RRB notices capture a live photograph during the application, so you may not need to upload one. Follow your notification.