RRB Group D Signature Resizer — 1000x400px, 30-49 KB
Signature preset locked to RRB Group D — 1000x400px, JPEG, 30-49 KB.
100% in your browser — files never uploaded
RRB Group D signature spec, pre-locked
This page opens the Signature Resizer with the exam and document type locked to RRB Group D's signature spec: 1000x400px at 100 DPI, JPEG format, 30-49 KB.
Why the RRB Group D photo isn't here
RRB captures your photograph LIVE inside the application form (webcam/mobile camera) — you do not upload a photo file. Applications using a pre-existing photo are rejected. Only the signature is uploaded. Only the signature has a static-upload spec, which is what this tool locks to.
Source of this spec
Official CEN 09/2025 (Level 1): JPG, 30–49 KB, minimum 140 × 60 px, minimum 100 DPI. Sign in running hand on plain white paper — capital letters are not accepted. The notice states a size FLOOR, not a target: any image at or above 140 × 60 px is valid. This tool outputs 1000 × 400 px, which clears the floor with room to spare and is large enough to fill the 30–49 KB window with real detail from a normal scan. A crisp, well-inked scan gives the best result here — 30 KB is a lot of file for a small signature. Sourced directly from rrbajmer.gov.in — CEN 09/2025 (Level 1) notification, photo & signature annexure (CEN 09/2025), verified 2026-07-12.
RRB Group D Signature Resizer — 1000x400px, 30-49 KB
This tool locks the Signature Resizer to the RRB Group D spec: 1000x400px at 100 DPI, JPEG format, 30-49 KB. Official CEN 09/2025 (Level 1): JPG, 30–49 KB, minimum 140 × 60 px, minimum 100 DPI. Sign in running hand on plain white paper — capital letters are not accepted. The notice states a size FLOOR, not a target: any image at or above 140 × 60 px is valid. This tool outputs 1000 × 400 px, which clears the floor with room to spare and is large enough to fill the 30–49 KB window with real detail from a normal scan. A crisp, well-inked scan gives the best result here — 30 KB is a lot of file for a small signature.
Why the RRB Group D photo isn't here
RRB captures your photograph LIVE inside the application form (webcam/mobile camera) — you do not upload a photo file. Applications using a pre-existing photo are rejected. Only the signature is uploaded. Only the signature has a static-upload spec, which is what this tool locks to.
Getting a Clean Result First Try
Signature rejections usually trace to the wrong KB range, the wrong aspect ratio, or a non-JPG format. Because this page pre-locks all three to the verified RRB Group D numbers, uploading a clear scan on plain white paper in black ink is usually enough to clear the portal's validation on the first attempt.
Frequently asked questions
What is the correct RRB Group D signature size?
1000x400px at 100 DPI, JPEG format, 30-49 KB.
Can I upload my RRB Group D photo here too?
No — RRB Group D captures the photo LIVE in the application module and rejects pre-existing uploads, so there is no static photo spec to resize. This tool locks only the signature.
Is my signature uploaded to a server?
No. Cropping, resizing and compression all happen entirely in your browser — the file never leaves your device.
Is this spec officially verified?
Yes — sourced directly from rrbajmer.gov.in — CEN 09/2025 (Level 1) notification, photo & signature annexure, CEN 09/2025, verified 2026-07-12.
Can I resize a signature for a different exam here?
This page is locked to RRB Group D. Use the full Signature Resizer to pick any other exam preset.
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OpenData verified: 2026-07-17 · All processing happens in your browser — no files are ever uploaded.