Scale III Officers Signature Compressor
Official 2026 Size & Format
Compress your signature to the strict 10KB–20KB limit required by Central Bureau of Investigation. Enforces black ink rules.
Why format your signature for Scale III Officers?
The Central Bureau of Investigation (CBI) strictly mandates that all uploaded signatures must be between 10KB and 20KB for the 2026 Scale III Officers application. Furthermore, the portal will reject your application if the signature is not done in black ink on plain white paper. Our free CBI signature compressor uses secure client-side processing to guarantee your file meets these exact specifications and ensures your signature remains crisp and legible for the final admit card.
Official Signature Specifications
- File size: 10KB – 20KB
- Dimensions: 140 × 60 px
- Ink color: black
- MANDATORY: NO CAPITAL LETTERS.
- Sign on white paper with Black Ink pen only.
How to Use
Upload Signature
Take a clear photo of your signature on plain white paper.
Auto-Process
Our tool removes dark backgrounds and compresses to the strict 10KB–20KB CBI requirements.
Download
Save the processed file. It is now ready for the CBI portal.
FAQ
Is this signature tool officially provided by CBI?
No. FreeApplyTools is an independent utility. The engine follows official CBI notification rules for 2026.
Why is my signature being rejected?
Signatures are often rejected if in wrong ink color (e.g., blue when black is required), on lined paper, or over 20KB. Our tool fixes the file size.
Common Scale III Officers Signature Upload Errors
"File size exceeds 20KB"
The CBI portal blocks uploads above 20KB. Our compressor automatically reduces to 10–20KB.
"Signature not in black ink"
Many applicants sign in blue or pencil. CBI explicitly requires black ink on plain white paper.
"Signature scanned on lined/ruled paper"
Use blank white paper. Notebook lines in the scan are a common rejection reason across government exam portals.
Next Steps for Scale III Officers
Continue preparing your application documents with official specifications.