The La Hague Convention, also known as the Hague Convention Abolishing the Requirement of Legalization for Foreign Public Documents, is a treaty signed by multiple countries aimed at simplifying the process of authenticating public documents for use abroad. The convention was established on October 5, 1961, and currently has 87 participating countries.

The purpose of the La Hague Convention is to ensure that public documents issued by one country are recognized as valid in another country without requiring further authentication. This can include documents such as birth certificates, marriage certificates, and educational transcripts. With the apostille certification, these documents can be used for legal and official purposes in foreign countries.

The participating countries of the La Hague Convention include:

Albania, Andorra, Argentina, Armenia, Australia, Austria, Azerbaijan, Bahamas, Barbados, Belarus, Belgium, Belize, Bosnia and Herzegovina, Botswana, Brazil, Bulgaria, Burundi, Canada, Chile, China (Hong Kong and Macau only), Colombia, Costa Rica, Croatia, Cyprus, Czech Republic, Denmark, Dominican Republic, Ecuador, El Salvador, Estonia, Eswatini, Fiji, Finland, France, Georgia, Germany, Greece, Guatemala, Honduras, Hungary, Iceland, India, Ireland, Israel, Italy, Japan, Kazakhstan, Korea (Republic of), Kyrgyzstan, Latvia, Lesotho, Liberia, Liechtenstein, Lithuania, Luxembourg, Malawi, Malta, Mauritius, Mexico, Moldova, Monaco, Montenegro, Morocco, Namibia, Netherlands, New Zealand, Nicaragua, North Macedonia, Norway, Panama, Paraguay, Peru, Philippines, Poland, Portugal, Romania, Russian Federation, Saint Kitts and Nevis, San Marino, Sao Tome and Principe, Serbia, Seychelles, Slovakia, Slovenia, South Africa, Spain, Sri Lanka, Suriname, Sweden, Switzerland, Tajikistan, Trinidad and Tobago, Tunisia, Turkey, Ukraine, United Kingdom, United States of America, Uruguay, Uzbekistan, and Venezuela.

To apostille a document for use in a La Hague Convention country, it must first be authenticated by the issuing authority in the country where it was issued. Once this is complete, the document can be sent to a designated apostille authority in the same country for further certification. In the United States, each state has its own designated authority for apostille certification, usually the Secretary of State's office.

To get the apostille service done efficiently for La Hague Convention countries, it is recommended to use a reputable apostille service company like ApostilleService.org. The company has a team of experienced professionals who are knowledgeable about the requirements for apostille certification in different countries, including La Hague Convention countries. They can assist with document authentication, translation, and apostille certification, ensuring a smooth and hassle-free process for their clients.