Signature Specifications for Indian Competitive Exams: Complete Guide 2026
Everything you need to know about signature size, format, ink colour, and file requirements for UPSC, SSC, Banking, Railway, NEET, and JEE exam applications.
If a photo rejection is frustrating, a signature rejection is worse — it’s every bit as avoidable and every bit as common. Exam portals in India are becoming increasingly strict about signature format, and the rules vary just enough between exam bodies to trip up candidates who’ve applied successfully before.
This guide covers every detail: dimension requirements, ink colour, the “running hand” rule, how to scan it correctly, and how to handle the file-size limit without visible quality loss.
Why Signatures Get Rejected
In order of frequency, the most common reasons for signature rejection:
- Capital letters used — Signatures on Indian exam forms must be in cursive/running handwriting. Block or capital letters are rejected.
- Wrong file size — Above the limit, or so low the image appears blurry.
- Coloured background — Signatures must be on white paper. Any yellowing, lines, or patterns are flagged.
- Printed or typed appearance — The signature must look handwritten from the original, not a scanned print of a typed name.
- Wrong dimensions — More important for Banking portals that specify pixels.
- Format not JPEG — PNG is commonly rejected, even though browsers often default to it.
Universal Signature Rules (All Exams)
Before we dive into exam-specific specs, these rules apply everywhere:
Ink Colour
- Black or dark blue ink — Black is safer and more widely accepted
- Never use gel pens that smear; ballpoint or fountain pen is ideal
- Never use pencil
Paper
- Plain white A4 or plain white blank paper
- No lines (notebook paper is rejected)
- No watermarks or logos
- Paper must be flat — no creases visible
The Running-Hand Requirement
Every Indian exam authority specifies that the signature must be in running hand (cursive). This means:
- Continuous, flowing handwriting — letters connected
- Not printed / block capital letters
- Not a stylised logo-like mark (some boards are flexible on this, but cursive is always safe)
- Your signature should resemble your name to an identifiable degree
How to Write It
- Use a fresh, flat sheet of white A4 paper
- Sign with black ballpoint pen, leaving generous white space around the signature
- Ensure the signature is the same as in your class 10 certificate, bank records, and Aadhaar
Scanning Your Signature
Using a Scanner
- Place the signed paper face-down on the scanner glass
- Scan at 200–300 DPI, colour mode: Grayscale (or Colour)
- Crop closely around the signature, keeping a small white border
- Export as JPEG
Using a Phone Camera (Camera Scan)
- Place the paper on a flat surface under bright, even light (daylight near a window is ideal)
- Hold the phone directly overhead — no tilt or perspective distortion
- Use the document scanner in your phone’s camera app, or apps like Microsoft Lens / Adobe Scan
- These apps automatically correct perspective and enhance contrast
- Export as JPEG (not PDF)
Enhancing for Upload
After scanning:
- Convert to black and white if it appears grey or yellowish
- Ensure the background is clean white
- Use our Signature Tool to resize, clean the background, and hit the exact file size
Exam-wise Signature Specifications
UPSC — All Exams (CSE, CDS, NDA, CAPF, IFS, CMS)
| Parameter | Requirement |
|---|---|
| Dimensions | 3.5 cm × 1.5 cm |
| Max file size | 300 KB |
| Format | JPG |
| Background | White |
| Ink | Black |
UPSC’s 300 KB limit is generous — you won’t have trouble with file size here. Focus on making the signature look clean and ensuring it’s in running hand.
SSC — CGL, CHSL, MTS, CPO, GD, JHT, JE
| Parameter | Requirement |
|---|---|
| Dimensions | 3.5 cm × 1.5 cm |
| Max file size | 30 KB |
| Format | JPG |
| Background | White |
SSC’s 30 KB limit is tight. A 350 × 150 px JPEG at 80 % quality typically comes to 8–15 KB — well within the limit. If you’re over 30 KB, reduce JPEG quality to 70 %.
IBPS — PO, Clerk, SO, RRB PO, RRB Clerk
| Parameter | Requirement |
|---|---|
| Dimensions | 140 × 60 px |
| Max file size | 30 KB |
| Format | JPG |
| Background | White |
IBPS specifies pixel dimensions for signatures. 140 × 60 px is quite small — ensure your original signature is legible at this size. Use the Signature Tool to resize accurately.
SBI — PO and Clerk
| Parameter | Requirement |
|---|---|
| Dimensions | 160 × 60 px |
| Max file size | 30 KB |
| Format | JPG |
| Background | White |
SBI PO uses 160 × 60 px — slightly wider than IBPS. Keep separate saved files for IBPS and SBI applications.
RBI — Grade B and Assistant
| Parameter | Requirement |
|---|---|
| Dimensions | 140 × 60 px |
| Max file size | 30 KB |
| Format | JPG |
| Background | White |
Same as IBPS standard.
Railway (RRB) — All Exams
| Parameter | Requirement |
|---|---|
| Dimensions | 3.5 cm × 1.5 cm |
| Max file size | 100 KB |
| Format | JPG |
| Background | White |
Railways give you 100 KB — comfortable to work with while still requiring a clean scan.
NEET UG
| Parameter | Requirement |
|---|---|
| Dimensions | 3.5 cm × 1.5 cm |
| Max file size | 30 KB |
| Format | JPG |
| Background | White |
NTA uses the same specification for NEET as most other exams. Stick to black ink on white paper.
JEE Main
| Parameter | Requirement |
|---|---|
| Dimensions | 3.5 cm × 1.5 cm |
| Max file size | 30 KB |
| Format | JPG |
| Background | White |
JEE Main and NEET follow identical signature specs.
UPPSC (All UP State Exams)
| Parameter | Requirement |
|---|---|
| Dimensions | 3.5 cm × 1.5 cm |
| Max file size | 50 KB |
| Format | JPG |
| Background | White |
BPSC (All Bihar State Exams)
| Parameter | Requirement |
|---|---|
| Dimensions | 3.5 cm × 1.5 cm |
| Max file size | 50 KB |
| Format | JPG |
| Background | White |
Quick Comparison Table
| Exam | Width × Height | Max KB | Format |
|---|---|---|---|
| UPSC | 3.5×1.5 cm | 300 | JPG |
| SSC | 3.5×1.5 cm | 30 | JPG |
| IBPS | 140×60 px | 30 | JPG |
| SBI | 160×60 px | 30 | JPG |
| RBI | 140×60 px | 30 | JPG |
| RRB | 3.5×1.5 cm | 100 | JPG |
| NEET | 3.5×1.5 cm | 30 | JPG |
| JEE | 3.5×1.5 cm | 30 | JPG |
| UPPSC | 3.5×1.5 cm | 50 | JPG |
| BPSC | 3.5×1.5 cm | 50 | JPG |
Step-by-Step: Preparing Your Signature File
Step 1 — Write the Signature
- Use black ballpoint pen on plain white paper
- Write your signature twice — pick the cleaner version
Step 2 — Scan or Photograph
- Scanner at 200–300 DPI is ideal
- Phone camera with document scanner app also works well
Step 3 — Crop Tightly
- Leave only 5–10 % white space around the signature
- Consistent white border makes the uploaded file look cleaner
Step 4 — Resize Using the Signature Tool
- Go to ExamFormTools Signature Tool
- Upload your scanned signature image
- Select the target exam preset (e.g., “IBPS — 140×60 px” or “UPSC — 3.5×1.5 cm”)
- Download the resized JPEG
Step 5 — Verify File Size
Check the downloaded file size in File Explorer / Finder. If over the limit, re-export at lower JPEG quality.
How to Fix Common Signature Problems
Problem: Background is Yellow or Cream
Fix: Scan using “Black & White” or “Grayscale” mode instead of Colour. Or use the whitening/threshold tool in the Signature Tool to make the background pure white.
Problem: Signature Looks Too Light (Pale Ink)
Fix: Increase the contrast in any image tool (or use the Enhance option in the Signature Tool). Alternatively, re-scan with a slightly higher DPI.
Problem: Signature Bleeds Off the Edge
Fix: Crop more carefully, or retake the scan with the signature centred on the page. Never upload a cropped-off signature.
Problem: File Over Size Limit
Fix: Reduce JPEG quality in the Signature Tool export settings. For a 140 × 60 px image, even 60 % JPEG quality produces a clean-looking result because the resolution is low.
Problem: Signature Looks Different From ID Documents
Fix: Always sign as you did on your school leaving certificate, PAN card, Aadhaar, and bank account. Mismatches can cause problems at the document verification stage. If your signature has evolved, update your bank records and ID documents first.
Frequently Asked Questions
Can I upload a digital/stylus signature?
Yes, if you sign on a tablet or using a stylus app. The output must still be JPEG, white background, and within size limits. The signature must be in running hand — typed text is rejected.
My signature is very short/simple (just initials). Will it be accepted?
Simple initials in block capital form would be rejected. Ensure even a simple signature has some cursive flow to it. Extended initials with a clear horizontal stroke are generally acceptable.
Should my exam form signature match my admit card?
Yes — and it must also match your ID proof and any original documents you carry. Banks, sarkari jobs, and government offices compare signatures for fraud detection.
I accidentally uploaded the wrong signature. Can I change it?
Most portals have a correction window. Log in and check for an “Edit Application” option. If the form is locked, contact the exam authority helpdesk immediately — signatures submitted incorrectly are sometimes corrected via email with supporting documentation.
Can I use a signature generated by an online tool?
If the tool generates a cursive-looking signature that is a scan of your actual handwriting (e.g., on a touchscreen), it may be acceptable. Pre-made logo-style signatures or font-generated signatures are not acceptable — they don’t hold up at document verification where officials compare live signatures.