Which hand thumb impression is required for exam forms?

Most central exams including IBPS, SBI, and RRB mandate the Left Hand Thumb Impression (LTI). If the left thumb is impaired, candidate guidelines allow right thumb impression with prior portal declaration.

What color ink should be used for the stamp?

Blue or black ink from a standard office stamp pad is accepted by banking and government portals. Avoid red, green, or faint gel inks.

How does the tool ensure ridge details are visible?

The cleaner boosts ridge contrast while filtering out background lighting inconsistencies, preventing the fingerprint from turning into an illegible dark blob.

Does the output strictly meet the 20KB to 50KB range?

Yes. The compression loop enforces both the minimum 20 KB boundary and the maximum 50 KB ceiling to avoid portal rejection.

DESK // TOOL WORKSPACE · LOCAL ENGINE

CLIENT-SIDE BUFFER (0% CLOUD STORAGE)

Thumb Impression Size and Cleaner

Thumb impression size tool cleans mobile camera captures of inked thumb stamps for government exam forms. It eliminates camera shadows, desk tints, and paper grain, sharpens fingerprint ridge patterns on pure white paper, and compresses the image to exact required bounds like 240x240 pixels between 20 KB and 50 KB.

STEP 01

INTAKE / UPLOAD

STEP 02

ADJUST / PREVIEW

STEP 03

EXPORT / DOWNLOAD

INTAKE // DROP FILE ON DESK

Upload photo of thumb impression

Removes shadows and paper tint, sharpens ridge details, and formats to exact exam portal KB limits.

LOCAL BUFFER/0% SERVER TRANSMISSION

OFFICIAL BENCHMARK

Official Exam Portal Thumb Impression Guidelines

Source: Institute of Banking Personnel Selection and NTA (Verified October 2026)

Item Requirement	Required Value
IBPS Thumb Impression	240x240 px (3x3 cm), 20 KB to 50 KB, Blue/Black Ink
NEET Fingers & Thumb	400x250 px, 10 KB to 200 KB, Blue Ink Stamp
RRB Railway Thumb	240x240 px, 20 KB to 50 KB
Background Rule	Pure white unruled paper with clearly visible ridges

VERIFIED ANSWERS