"Plain white background" is the phrase everyone remembers, and it is wrong for a large part of the world. Background colour is set per document, and using the wrong one is a straightforward refusal.
What each authority asks for
| Document | Background |
|---|---|
| US passport, DV Lottery, US visa | White or off-white |
| UK passport | Plain light grey or cream |
| Schengen visa and most EU passports | Plain light grey |
| Canada passport | Plain white |
| Australia passport | Plain, light coloured |
| India, China, Korea, Singapore | Plain white |
| Japan passport | Plain, light, no pattern |
The interesting entry is the UK, which explicitly does not want pure white. A photo on a white backdrop, submitted to HM Passport Office, can be refused for exactly the background that would have been correct in Washington.
Why grey rather than white
The reason is contrast at the edge of the head. Against pure white, light hair and light skin lose their outline - the boundary the biometric system uses to find where the head ends disappears into the paper. A light grey or cream field keeps that edge readable for every hair colour.
The countries that ask for white are effectively accepting slightly worse edge contrast in exchange for a simpler instruction.
"Plain" is a separate rule
Colour is easy to satisfy. The second half of the requirement - that the background be uniform - is where home photos actually fail:
- A shadow behind the head. Standing close to a wall with light from the front puts a dark halo behind you. It is the single most common background failure.
- A gradient. A wall lit from one side is brighter on that side. Software measuring uniformity notices.
- Texture. Woodchip, brick, fabric weave, a visible join between wall and ceiling.
- Objects. A door frame, a light switch, a picture rail, the corner of the room.
Note that replacing the background fixes colour and objects, but it does not fix a shadow that falls across your face, and it cannot invent detail where hair has merged into a dark patch behind it.
Shooting for a replaceable background
- Stand well away from the wall. A metre is plenty. This is what removes the shadow, not a brighter light.
- Face the light. A window is ideal. Light on the face from the front means no shadow behind the head from your own body.
- Avoid matching tones. Blonde hair against a cream wall, or dark hair against a dark door, gives the segmentation nothing to work with.
- Do not wear the background. A white shirt on a white wall makes the shoulder line ambiguous, and some authorities also want visible contrast between clothing and backdrop.
Replacement, not cut-out
There is a visible difference between a background that has been replaced and one that has been cut out. A hard cut-out leaves a sharp, slightly jagged edge around the hair, and fine strands vanish. It is the tell that a photo has been through a cheap tool, and it reads as edited - which is a category authorities are specifically unhappy with.
Good replacement keeps the semi-transparent pixels at the hair edge and composites them against the new colour, so a few stray strands still read as hair rather than as a fringe of artefacts.
IDShot replaces the background with whatever colour the document requires in one tap, keeps the hair edge natural, and separately measures whether the original background was plain enough - because those are two different problems and only one of them can be fixed after the fact.
Requirements are changed by the authorities that publish them, and the official page is the only source that settles an argument. Each preset in IDShot links to that page, so you can confirm the current wording before you submit.