When filling government job application forms — SSC CGL, SSC CHSL, UPSC Civil Services, Railway RRB NTPC, or IBPS PO/Clerk — you'll always encounter: "Upload scanned signature. Maximum size: 10KB/20KB. Format: JPG. Dimensions: 140×60 pixels."
Your phone scan produces a 1–5 MB file. Getting it down to 10KB while keeping the signature legible requires the right approach. This guide covers the exact specifications for every major exam and shows you how to do it in 30 seconds.
Signature Size Requirements by Exam
| Exam/Form | File Size | Dimensions | Format |
|---|---|---|---|
| SSC CGL/CHSL | 1KB–12KB | 140×60 px | JPG |
| UPSC CSE/IAS | 20KB–300KB | Passport-sized | JPG |
| Railway RRB NTPC | 10KB–20KB | 140×60 px | JPG |
| IBPS PO/Clerk/SO | 1KB–20KB | 140×60 px | JPG |
| NEET/JEE | 10KB–20KB | 140×60 px | JPG |
| Indian Navy/Army | 10KB–20KB | 140×60 px | JPG |
How to Scan Your Signature Correctly
- Use a white sheet of paper — Unlined A4 paper gives the cleanest scan
- Sign with a dark pen — Black or dark blue ink works best for contrast
- Take a clear photo — Use natural daylight, hold phone parallel to the paper
- Crop tightly — Remove all extra whitespace around the signature
Step-by-Step: Compress to Exact Size
Step 1: Crop Your Signature
Use our Image Cropper to tightly crop around your signature, removing all the extra paper area.
Step 2: Resize to 140×60 Pixels
Use our Signature Resizer or Image Resizer to set exact dimensions: Width = 140px, Height = 60px.
Step 3: Compress to Target Size
Use our Compress Image to 20KB tool. Set the target size to 10KB or 20KB depending on your exam requirement.
Pro Tips for Government Form Signatures
- Always use JPG format — PNG files are too large and many portals reject them
- Test your upload — After compressing, verify by uploading to the form. If rejected, try 1–2 KB lower.
- Keep a master copy — Save a high-resolution scan and compress copies as needed
- White background — Ensure the background is pure white, not gray or yellowish
Related Tools
- Signature Resizer — Purpose-built tool for signature dimensions
- Image Compressor — General-purpose image compression
- Compress to 20KB — Exact file size targeting
- Image Cropper — Crop whitespace from scanned signatures
FAQ
Why is my signature getting rejected even after compression?
Most common reasons: wrong dimensions (must be exactly 140×60 px for SSC/Railway), wrong format (must be JPG, not PNG), or file size slightly over the limit. Re-compress with 1KB lower target.
Can I use a digital signature instead of scanned?
Most government forms require a scanned handwritten signature. Digital or typed signatures are usually not accepted for SSC, UPSC, or IBPS forms.