What Is This Error?
UPSC's portal automatically checks every uploaded signature image for blank/white pixel ratio. For the "Triple Signature" field (where you upload all 3 signatures on one image), the system requires that less than 95.5% of the image be white/blank.
Raw photo
Fixed Image - with sahiphoto.in
✅ All 3 signatures visible · Serial numbers written · Photographed close-up · Blank space minimal
Resize Your Signature Right Here —
No need to visit another site. Upload your signature photo below and get a UPSC-ready file instantly. Toggle Scan Enhancement ON for the cleanest result — it removes grey backgrounds and uneven lighting automatically.
UPSC Signature Resizer
Instantly resize your signature to UPSC specs: 500×350 px · 20–100 KB · JPG · "signature". No upload to server — works completely offline.
Scan Enhancement ON
White background · dark ink · removes grey/noise
Drop your signature image here
or click to browse · JPG, PNG, HEIC supported
💡 After downloading, go to your gallery and upload from there — not directly from camera
5 Steps to Fix the Error
Follow in order. This exact process was verified working on the UPSC CSE application portal.
Add Serial Number on Paper
Write 1), 2), 3) with your signature next to each — exactly like the sample image below. Use blue or black ballpoint pen. This reduces blank space and makes each signature unique.
Click Photo Very Close
Get your phone camera as close as possible to the paper. The signatures should fill at least 80% of the frame. Good daylight, no shadows. Then crop tightly around the signatures.
Resize Using the Tool Above
Use the UPSC Signature Resizer on this page (or SahiPhoto.in). Target: 500×350 px, 20–100 KB, JPG. Enable Scan Enhancement for a cleaner white-background result. This step is what most people skip — and why they face the error.
Save to Gallery First
After resizing, download the file to your phone gallery or Downloads folder. Do NOT directly use the camera option on the UPSC portal — browser camera captures get wrong filenames and metadata.
Upload From Gallery on Portal
On the UPSC form, tap 'Choose File' → select 'Gallery' or 'Files'. Pick your resized signature file. Blank percentage will be within limit and upload will succeed on the first attempt.
Why Does This Happen on Mobile?
When you tap 'Camera' directly on the UPSC upload page, the browser captures the image and assigns a random filename. It bypasses your resized file entirely.
When you save the resized image to your gallery/downloads first, then select it via 'Files' or 'Gallery', the correct pre-processed file gets uploaded every time.
📋 Pre-Upload Checklist
Frequently Asked Questions
UPSC checks how much white space is in your signature image. If your signature is tiny in a large white image, 95%+ of pixels are blank — triggering this error. Fix: get closer when clicking the photo so signature fills the frame.
UPSC CSE form requires you to upload 3 signatures (triple). Each must be on a single image, labelled 1), 2), 3). The system verifies all three are present and the blank space is within limits.
Scan Enhancement is recommended for most people — it removes grey backgrounds and uneven lighting from phone photos, giving a crisp white-background result that portal validators prefer. If your photo is already very clean and high-contrast, standard resize is fine.
Yes — any tool that outputs exactly 500×350 px, 20–100 KB, JPG format works. This page's built-in resizer does it for free without uploading your image anywhere.
You're likely uploading via the direct camera option on mobile. The browser renames the file and bypasses your resize. Always pick from gallery / files app after saving the resized image.
Yes. Write 1), 2), 3) and sign next to each on a single white sheet of paper. Photograph all three together, then resize that single photo. Upload this one image for the Triple Signature field.