Apostille is a French word which means a certification. It is commonly used in English to refer to the legalization of a document for international use under the terms of the 1961 Centuries. Hague Convention Abolishing the Requirement for legalization for Foreign Public Documents. A document which has been certified with a conformant apostil is accepted for legal use in all the nations that have signed the Hague Convention. It is comparable to a notarization. If your document will be used in a foreign country you will need an Apostil, this we can do for you.