Framing comes before file size
The convention across most passport style requirements is a square or near square crop where the head occupies the majority of the vertical space, with a small margin above the hair and the shoulders just visible at the bottom. Eyes fall roughly on the upper third line, looking directly at the lens.
The background should be plain and light, and genuinely plain — a wall with a visible join, a door frame or a shadow gradient behind your head causes rejections. Face the camera squarely with a neutral expression, no hat, and no tinted glasses.
Lighting decides how well it compresses
Even, diffuse light produces smooth tones that encoders handle efficiently. Harsh light produces hard shadow edges and noise in the dark areas, and noise is the single most expensive thing an image can contain. A photograph taken in soft indoor daylight will reach a given file size looking considerably better than one taken with direct flash.
Then match the stated limits
Once the crop is right, set the maximum width to the pixel dimension the application asks for and use target size mode for the file size cap. Requirements vary between passport authorities, visa applications and examination boards, so take the numbers from the specific form.
Questions
- What background colour should a passport photo have?
- Plain white or a very light neutral shade is accepted almost universally, and a plain light blue is accepted by many authorities. The requirement that matters more is uniformity: no pattern, no visible shadow behind the head, and no objects in the frame. Photograph yourself standing well away from the wall to avoid casting a shadow onto it.
- Can I crop a normal photograph into a passport photo?
- Often yes, if the original was taken face on with even lighting and a plain background behind you. What cannot be fixed by cropping is a three quarter angle, a busy background, or a strong shadow across the face. If the source has any of those, take a new photograph rather than trying to rescue it.
- Does the photo need to be printed at a specific physical size?
- For a digital upload, only the pixel dimensions and file size matter — physical measurements in millimetres apply to printed submissions. If you need both, produce the print from the original file rather than from the compressed upload copy, which has been reduced for transmission.
- Can I wear glasses or a head covering in the photograph?
- Rules differ between authorities, so read the specific instructions. The common pattern is that clear prescription glasses are accepted provided there is no glare across the lenses and the eyes are fully visible, tinted lenses are refused, and head coverings worn for religious reasons are permitted so long as the full face from chin to hairline remains uncovered.