If you are planning to do so, you will want to participate at the Diversity Visa Lottery Program of the US Government, better know as the green card lottery. Participating in this lottery is free and you can always find all the information you need on www.dvlottery.state.gov.
This website helps you to make sure your picture meets the requirements.
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Please note: We are trying hard to make this check match the US requirements for photos submitted to the Diversity Visa (DV) Lottery Program. However, we do no guarantee, that the checks performed on this website are correct and there is no liability that photos checked with this website will be accepted for the Diversity Visa (DV) Lottery Program. The check was last updated on October 6, 2017.
All uploaded photos will automatically be deleted from our servers after a maximum of one hour. No uploaded photos will be made public or used in any other way than to proceed this check. This is a private website. We are not in any way associated with the Diversity Visa (DV) Lottery Program or any other services or authorities of the US government or any other official institution.