Passport Photo Size in Pixels: 35×45 mm, 2×2 in, 3×4 cm
Short answer: at 300 dpi, 35×45 mm = 413×531 px, 2×2 in = 600×600 px, 3×4 cm = 354×472 px and 5×5 cm = 591×591 px. In Imgdeck tap ID photo size, pick the size and the photo is centered and cropped to those exact pixels.
The common sizes
35×45 mm is used for passports and visas in much of Europe and Asia. 2×2 in (51×51 mm) is the US passport and visa size. 3×4 cm is a common résumé and ID size in Korea and Japan.
How the conversion works
Pixels = millimetres ÷ 25.4 × dpi. At 300 dpi, 45 mm becomes 531 px. Forms that ask for pixels usually expect exactly these numbers or larger in the same ratio.
Before you submit
Size is only one rule. Face size, plain background and lighting matter too, and rules change, so always check the official guide of the country issuing the document.
FAQ
Why 300 dpi?
Print shops and most online forms assume 300 dots per inch. 35 mm ÷ 25.4 × 300 ≈ 413 px.
Is the size alone enough?
No. Head size, background color and expression rules also apply. Check your country's official guide.
Can I upload these directly?
Usually yes; if the form has a KB limit, compress after cropping.