Biometric passport photo requirements explained (ICAO 9303)
What "biometric" means on a passport photo: face coverage, eye line position, expression rules, lighting, and which countries follow ICAO Doc 9303 to the letter.
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TL;DR — the six biometric rules
- Head fills 70 – 80% of photo height (50 – 69% for US).
- Eyes in upper third of frame, looking straight at the lens.
- Neutral expression, mouth closed.
- No glasses.
- Plain, light, uniform background.
- Uniform front lighting, no shadows.
What is ICAO Doc 9303?
ICAO Doc 9303 is the international civil aviation standard for Machine Readable Travel Documents (MRTDs), including passports, visas, and biometric ID cards. Published by the International Civil Aviation Organization (a UN specialised agency), the document defines the technical requirements that allow a passport to be readable at any international border equipped with automated systems. The portrait portion — set out in Part 4 — specifies head coverage (70 – 80% of photo height), eye line position (upper third of the frame), expression (neutral, mouth closed), lighting (uniform, front-facing, no shadows), and background (plain, light, uniform). Most countries adopt these rules verbatim; a few (notably the US, India, Canada, and China) override the size in millimetres while retaining the biometric framing envelope. ICAO Doc 9303 is the reason a UK and a Schengen passport photo are interchangeable: both implementations point to the same parent standard.
What each rule actually means
Face coverage (70 – 80% of photo height)
ICAO Doc 9303 Part 4 defines "Token Image Type": the head, from the bottom of the chin to the crown, must occupy 70 – 80% of the photo height. This range is what most authorities follow. Outliers: the US has historically used 50 – 69% (which is why US 2×2 photos look more "zoomed out").
Eye line in the upper-middle band
Eyes must sit in the upper third of the frame, roughly 56 – 69% from the bottom of the photo. This range keeps face landmarks at predictable Y-coordinates so an automated reader can find them without hunting.
Neutral expression, lips closed
Mouth closed, no teeth visible, no smile, no frown. Even a faint smile moves the cheek line and is enough to fail an automated check.
Eyes open and looking straight at the camera
Both eyes fully open, looking directly at the lens. Glasses are prohibited in most authorities since 2016 – 2018 (glare made matching unreliable).
Plain, light, uniform background
Most countries require plain white (#FFFFFF) or off-white. A few prefer light grey (#F5F5F5). Patterned, textured, or coloured backgrounds are rejected regardless of how the face is framed.
Uniform front-lighting, no shadows
Lighting must illuminate the face evenly with no shadows on the cheeks, neck, or background. Open shade outdoors or two soft window-light sources at home are the easiest setups.
Countries that diverge from ICAO defaults
- United States — head coverage 50 – 69%, 2×2 in (51×51 mm) photo, white background. See US passport photo rules.
- China — 33×48 mm, head coverage 28 – 33 mm tall, white background, specific head/top-margin band. See China visa photo rules.
- India — 51×51 mm passport, 35×45 mm visa, face coverage 70 – 80%, file ceiling 240 KB online. See India passport photo rules.
- Schengen Area — 35×45 mm, light grey or white background, ICAO framing strictly. See Schengen visa photo rules.
FAQ
What does "biometric" mean on a passport photo?
It means the photo is suitable for automated face recognition: a fixed head coverage in the frame, eye line in the upper-middle band, neutral expression, and uniform lighting that lets a matching algorithm find the same facial landmarks every time.
Is ICAO 9303 mandatory?
ICAO Doc 9303 is the international civil aviation standard for machine-readable travel documents. It is mandatory in spirit for any passport that needs to be readable at international borders. Each country implements it with local overrides (size, background colour, file ceiling).
What is the correct head coverage in a biometric photo?
ICAO sets 70 – 80% of the photo height as the head coverage envelope. Some countries narrow this (US: 50 – 69% of height; India: 70 – 80%). Always check the country page for your specific authority.
Why is smiling not allowed in a biometric photo?
Smiling moves cheek and lip landmarks, which lowers automated matching accuracy. Modern matching templates use a neutral-expression reference, so a smile is grounds for rejection even if the photo is otherwise perfect.
Can a biometric photo be taken with a phone?
Yes. ICAO does not require studio equipment — it requires the resulting photo to meet the dimensional, lighting, and expression rules. A modern phone shot at the highest resolution against a plain wall in even light is enough when paired with a tool that re-crops to the correct geometry.
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