2 x 2 inches, front, dress appropriately and no glasses.
That is 'passport' size. It may,however, depend on the country from which you get the passport to travel to Saudi Arabia.
4cm x 3.4cm 1.2 in X 1.5 in
The Indian passport regulatory document states the size to be 3.5cm X 3.5cm but this would create a square shaped photo and in India, most of the passport size photos are in a rectangular shape so set it to 3.5cm X 4.5cm.
pass
If you are in India, the passport photo size is 35x35mm. However if you are in the USA and are renewing or applying for Indian passport with any of the Indian consultes, they will take 2x2 inch or 51mmx51mm sized photos.
The size of photo dimensions would depend on the desired size of the photo for printing, regardless of the country.
Passport booklet size are approximately 3.5 inch (Width) x 5.0 inch (Height).
Load picture - make sure it not a backround In Edit > Transform > scale and change the size to that of a passport photo
It varies from place to place. In India 3.5 x 3 is the size for a passport photo.
UK are 3.5cm width and 4.5 cm length
6x4 (cm)
Passports must have a photo of only the individual applying for the passport. These are wallet sized photos and can be taken at any photo processing center.