Several photos for the price of one print
Photo labs and drugstore kiosks print a 4 x 6 inch or 10 x 15 cm photo for very little money. With six or eight passport photos placed on that one print you get all the copies you need for a passport, a visa, a residence card or a job application in one go. Choose the sheet and the tool fits as many copies as possible; type a number under Copies if you need fewer. A4 and Letter are there for home printers and fit up to 32 photos of 35 x 45 mm.
Everything is calculated at 300 DPI, the usual resolution of photo printers: one millimeter is 11.81 pixels, so a 35 x 45 mm photo is 413 x 531 pixels and a 2 x 2 inch photo is 600 x 600 pixels. The sheet is turned to landscape automatically when that fits more photos.
Print at the real size
JPG and PNG sheets carry 300 DPI in the file, so photo labs and most print programs print them at the correct size. The PDF page is exactly the size of the paper. In the print dialog always choose Actual size or 100 percent and switch off Fit to page or borderless enlargement, otherwise the photos grow or shrink a little. Measure one photo with a ruler after printing before you cut the rest.
Thin gray cut lines extend the edges of every photo to the border of the sheet. Cut along them with a paper trimmer or a sharp knife and a ruler. Gap and Margin are automatic: photo paper sizes, which labs print without a border, get no margin, and A4 and Letter get 5 mm for home printers. The gap is 2 mm when that still fits as many photos, otherwise smaller or none. Type your own values to change them, or empty the field to go back to automatic. Some labs trim a millimeter at the edges; if yours does, set a margin of 2 or 3 mm.
Check the rules before you print
Each country and office has its own rules about photo size, head height, background color and expression, and some do not accept home prints at all. This tool gets the size and the layout right, but it does not check the face or the background. Read the official requirements of the office you apply to, crop the photo so the head has the requested height, and use the image cropper's passport pages for a single digital photo.