Scale I Officers Left Thumb Impression (LTI)
Compressor (2026)
Compress your Left Thumb Impression to the strict 20KB–50KB limit required by Central Bureau of Investigation.
Updated for 2026 Exams
Based on Official CBI Notification
100% Private – No Data Leaves Your Device
Why format your Left Thumb Impression (LTI)?
The Central Bureau of Investigation (CBI) uses biometric verification during the Scale I Officers examination process. If your uploaded Left Thumb Impression (LTI) is smudged, too dark, or exceeds the strict 50KB limit, the portal will reject your application. You must press your thumb firmly on a generic ink pad (black or blue ink) and stamp it on plain white paper. Our processor ensures the final scan is perfectly compressed to meet the 2026 official guidelines.
Official LTI Rules
- File size: 20KB – 50KB
- Ink color: black or blue
- Left thumb impression on white paper.
- Ridges must be clearly visible.
Next Steps for Scale I Officers
Continue preparing your application documents with official specifications.