RRB Signature Resizer | Fix 140×60 Pixels (30KB – 50KB)

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

JPG, JPEG Only

Adjust box to fit signature (140×60 Ratio):

Fixed! Size is RRB Safe (30KB – 50KB)


Download RRB Signature

If you are applying for the latest RRB Recruitment and your signature keeps getting rejected, you are likely facing a common “File Size” issue. Most online tools are built to compress images, but for Railway exams, you often need a JPG size increase to hit the mandatory minimum 30KB limit.

Our RRB signature compressor is unique because it doesn’t just shrink your file; it “Force-Fixes” it to stay strictly within the 30KB to 50KB range while maintaining the exact 140 x 60 pixel dimensions required by the Railway Recruitment Board.

RRB Group D Signature Size and Specifications 2026

To avoid an RRB Group D photo rejected reason, your signature must follow these technical rules:

RequirementOfficial Specification
Dimensions140 x 60 Pixels (Width x Height)
Minimum Size30 KB
Maximum Size50 KB
Ink ColorBlack Ink Only
StyleRunning Handwriting (No Capitals)
RRB Signature Resizer Fix 140x60 Pixels (30KB - 50KB)

Why Most Tools Fail for RRB Signature Resize

When you search for a standard signature compressor, the tool tries to make the file as small as possible. However, a 140×60 px image is naturally only 4KB to 8KB. The RRB portal will reject this for being “Too Small.”

Our tool uses a “Data-Padding” algorithm. This allows for a JPG size increase that adds the necessary digital weight to the file without making the signature look blurry or pixelated. This ensures your RRB Group D signature size is perfect for the 2026 recruitment cycle.

Common Mistakes That Lead to Rejection

  1. The “All Caps” Mistake: Never sign your name in Block/Capital letters. RRB considers this “identity masking” and will reject your application.
  2. 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.
  3. Lined Paper: Ensure you sign on Plain White Paper. Lines or shadows in the background interfere with the digital scanning process.
  4. 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:

  1. Upload your signature image.
  2. Crop it using the fixed 140×60 aspect ratio box.
  3. Click “Convert to 30KB – 50KB”.
  4. 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.