iOS & iPadOS · MSRX
A passport photo is not defined by its outer dimensions. It is defined by how much of the frame your head fills and where your eyes sit. That is why a photo can be exactly 413 × 531 pixels and still be refused.
What it does
Your chin and eye line are found, and the top of your head is measured rather than estimated, so hair is not cropped off. The crop is solved so your head lands inside the range your format publishes.
The outline you frame yourself in is drawn to your format's own head-height range. It turns green only when the photo it would produce actually meets the rule, not when a face is merely inside a circle.
Every format names the authority its figures came from and the date they were read. Where an authority publishes a size but no head-height range, the app says so instead of inventing one.
Some authorities refuse any edited photo, and some take the photograph themselves. Where that is true, the app says so before you spend any effort rather than selling you a file you cannot submit.
Print sheets on 4×6, 5×7, A4 and US Letter with real gutters and crop marks that miss your face. PDF export at true physical size, so a print shop cannot rescale it.
Every photo is processed on your device. Nothing is uploaded, there is no account, and no data is collected. The app works with no network at all.
Final acceptance of any photo is always the issuing authority's decision. This app measures your photo against the rule an authority publishes and shows you the result; it does not and cannot guarantee that an application will be accepted.