I never add a photo because it can have you excluded from some processes e.g. government. The tricky one is citizenship - again for some companies it might get

I never add a photo because it can have you excluded from some processes e.g. government. The tricky one is citizenship - again for some companies it might get you excluded (though they should tell you beforehand), but it also helps a lot to show companies that you don't need a visa (that would often also get you excluded!).