Glossary

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B

Background Compliance Rules

Rules for plain background color, contrast, and shadow control.

Biometric Passport Photo Requirements

What makes a passport photo biometric and compliant for government use.

C

Crown to Chin Measurement Guide

How face height is measured and validated in official photo workflows.

D

Digital Delivery Format Explained

Understanding digital output sizes and file formats for online applications.

G

Glare and Reflection in ID Photos

How lens glare, skin shine, or reflective accessories affect acceptance.

H

Head Size Ratio in Passport Photos

How large the head must appear inside the final photo frame.

I

ICAO Standards for Travel Documents

The global baseline rules used by many countries for passport photos.

Image Resolution for Passport Photos

Minimum pixel quality requirements for sharp and printable results.

N

Neutral Expression Requirement

Why smiling, frowning, or exaggerated facial expressions can cause rejection.

P

Common Passport Photo Rejection Reasons

Frequent causes of rejection and how to prevent them.