India Post GDS Signature Resizer
Quickly fix the 5:2 Aspect Ratio error and ensure your signature is between 20KB and 50KB for successful upload.
Click to Upload Signature
Supports: JPG, JPEG, PNGAdjust the box to center your signature:
India Post GDS Signature Resizer: Fix 5:2 Aspect Ratio Error
The only tool designed specifically to fix the “Image must have 5:2 aspect ratio” error for India Post GDS Online Engagement applications. Resize your signature to the mandatory 20KB with the correct dimensions instantly.
Why is India Post Rejecting My Signature?
If you are applying for the Gramin Dak Sevak (GDS) recruitment, you have likely encountered this frustrating red error message during the document upload stage:
“Image must have 5:2 (landscape) aspect ratio (+-10% tolerance).”
What does this mean?
Unlike SSC or UPSC exams, which accept standard rectangular signatures, the India Post portal uses a strict mathematical formula to validate uploads. Your image width must be exactly 2.5 times greater than its height. Most standard cropping tools or phone editors create random shapes (like 3:4 or 16:9), which causes immediate rejection.
The Solution: 5:2 Ratio Auto-Lock
Our GDS Signature Resizer eliminates the guesswork. It automatically locks the cropping box to the mandatory 5:2 Ratio. This guarantees that your downloaded file will be mathematically perfect and accepted by the GDS portal instantly.
How to Resize Signature for GDS Online (Step-by-Step)
- Upload: Click the box above and select your signature photo from your gallery.
- Crop: The tool will open a rectangular box. Notice that the box shape is locked? That is the 5:2 ratio. Simply drag the box to cover your signature.
- Process: Click the “Convert to 20KB – 50KB” button. This optimises the file size to be within the safe range required by the server.
- Download: Save the image. It is now ready for upload.
Official GDS Photo and Signature Requirements (2025-2026)
To avoid form rejection, ensure your documents meet these exact technical specifications used by the India Post server.
| Document | File Size | Aspect Ratio | Dimensions (Pixels) | Format |
| Signature | 10 KB – 20 KB | 5:2 (Landscape) | 250px (W) x 100px (H) | JPG / JPEG |
| Photo | 20 KB – 50 KB | 1:1 (Square) | 200px (W) x 200px (H) | JPG / JPEG |
Common Errors and Solutions
- Error: “File size exceeds 20KB”
- Reason: You scanned the signature in high definition (HD).
- Fix: Use our tool’s compression feature. It reduces the internal quality slightly to bring the file under 20KB without making the text unreadable.
- Error: “Dimensions are not valid”
- Reason: Your image might be a 5:2 ratio, but the pixels are too low (e.g., 50×20 pixels).
- Fix: Our tool forces the output to 250px x 100px. This is the “Sweet Spot” for the India Post server, high enough quality to print, but small enough to load fast.
Frequently Asked Questions
Q: Can I use this tool on mobile?
A: Yes. The GDS application is often filled via mobile. Our tool works perfectly on Android and iPhone (Chrome/Safari). Just tap “Upload,” pinch to zoom the signature into the box, and download.
Q: Should I use Black or Blue ink?
A: India Post guidelines recommend Black Ink on white paper for the best contrast. However, Blue ink is generally accepted if the background is pure white and the scan is clear.
Q: Why does the crop box look so wide?
A: That is the 5:2 Landscape requirement. It is meant to be a wide, thin strip. If you write your signature in two lines (one below the other), it might not fit. Try to sign in a single horizontal line for the best results.
Q: Is my data safe?
A: 100% Safe. We use client-side processing. Your signature image is edited directly inside your browser and is never uploaded to our servers. Your privacy is our priority.