How do I legalise a Thai birth certificate for use in France?

Short answer: Processing time: Standard legalisation 3–5 business days · Express 1–2 business days · Full chain (translation + MFA + destination embassy) 5–7 business days. The usual causes of delay are name spellings that do not match the passport, unclear seals, and copies older than the receiving authority allows — all of which we check before submission. Nationwide document pickup in Thailand with DHL/FedEx return worldwide.