AFCAT Ground Duty (Technical) Signature Compressor
Official 2026 Size & Format
Compress your signature to the strict 10KB–50KB limit required by Air Force Common Admission Test. Enforces black ink rules.
Upload JPG or PNG, up to 5 MB — we'll convert it to match the spec above.
How this tool works
This tool scales your signature to its own width, up to 500 pixels and saves a JPG between 10 KB and 50 KB for Ground Duty (Technical). It keeps quality as high as the 50 KB limit allows and pads a file that comes out under 10 KB without changing the image. It does not change ink colour, so sign in black ink on plain white paper.
Full guide: cropping, pixel frames and how the signature resizer works →Official Signature Specifications
- File size: 10KB – 50KB
- Ink color: black
- Sign on unruled white paper with black ink.
How to Use
Upload Signature
Take a clear photo of your signature on plain white paper.
Auto-Process
Crop close to the ink; the tool compresses it to the strict 10KB–50KB AFCAT requirements.
Download
Save the processed file. It is now ready for the AFCAT portal.
FAQ
Is this signature tool officially provided by AFCAT?
No. FreeApplyTools is an independent utility. The engine follows official AFCAT 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 50KB. Our tool fixes the file size.
Common Ground Duty (Technical) Signature Upload Errors
"File size exceeds 50KB"
The AFCAT portal blocks uploads above 50KB. Our compressor automatically reduces to 10–50KB.
"Signature not in black ink"
Many applicants sign in blue or pencil. AFCAT 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 Ground Duty (Technical)
Continue preparing your application documents with official specifications.