Do Thai visa applications require new passport photos or can I use old copies?

When applying for a visa extension in Thailand, the requirement for passport photos can vary. While formal guidelines usually state that photos should be recent (within the last 6 months), some expats have reported successfully using older copies without issue. However, specific visa types, such as those associated with marriage to a Thai national, often require up-to-date photos taken recently. Experiences from various immigration offices indicate that while using older photos may work in some cases, many officers expect new photos for each application, and may compare them to prior submissions.