RRB Signature Resizer
⚠️ Requirement: 140 x 60 Pixels (30KB – 50KB)
Fix RRB Group D & ALP Signature Size. Use Black Ink on White Paper.
Click to Upload Signature
Adjust box to fit signature (140×60 Ratio):
RRB Signature Resizer | Fix 140×60 Pixels (30KB – 50KB)
RRB Group D Signature Size and Specifications 2026
To avoid an RRB Group D photo rejected reason, your signature must follow these technical rules:
| Requirement | Official Specification |
| Dimensions | 140 x 60 Pixels (Width x Height) |
| Minimum Size | 30 KB |
| Maximum Size | 50 KB |
| Ink Color | Black Ink Only |
| Style | Running Handwriting (No Capitals) |
Common Mistakes That Lead to Rejection
To avoid an RRB Group D photo rejected reason, your signature must follow these technical rules:
- The “All Caps” Mistake: Never sign your name in Block/Capital letters. RRB considers this “identity masking” and will reject your application.
- Blue Ink Usage: Even if your RRB Group D signature resize is successful, using blue ink can lead to rejection at the document verification stage. Always use a Black Ink Pen.
- Lined Paper: Ensure you sign on Plain White Paper. Lines or shadows in the background interfere with the digital scanning process.
- Incorrect Resolution: If you don’t use the specific 140×60 px ratio, the signature will appear stretched or squashed on your admit card.
How to Increase JPG Size to 30KB for RRB?
If your scanned signature is only 10KB or 15KB, follow these steps using our tool:
- Upload your signature image.
- Crop it using the fixed 140×60 aspect ratio box.
- Click “Convert to 30KB – 50KB”.
- Our tool will automatically upscale the internal resolution to ensure the final file is above 30KB and below 50KB while keeping the pixel dimensions exact.
Frequently Asked Questions (FAQ)
What is the correct RRB signature size in cm?
he official requirement is in pixels (140×60 px). In centimeters, this is approximately 3.7 cm x 1.5 cm. However, using pixel dimensions is more accurate for online form filling.
How can I fix the “Signature size should be at least 30KB” error?
This is a very common error. You need to use our RRB signature compressor with the “Force-Weight” feature enabled. It ensures that even a small crop reaches the 30KB threshold.
Can I use a signature from a Pi7 image or other resizers?
You can, but you must manually check if the size is above 30KB. Most users prefer PhotoKB because we have hard-coded the RRB limits into the tool, making it a “one-click” solution for RRB recruitment.
Is a 50KB signature too large for RRB?
Yes. The upper limit is 50KB. If your file is 50.1KB, it will be rejected. Our tool targets a “Safe Zone” of 35KB to 45KB to ensure 100% acceptance.