Article 19 is an organization dedicated to the protection and promotion of freedom of expression and information worldwide. It operates as a non-profit entity, engaging in advocacy, legal support, and policy development to ensure that individuals can freely express themselves and access information without undue restriction.

The organization works across various regions, addressing issues such as censorship, media freedom, and digital rights. It collaborates with governments, civil society, and international bodies to influence policy and legislative changes that uphold the principles of free expression.

Regarding sustainability, there is limited publicly available information on Article 19's environmental impact or sustainability initiatives. As a non-profit focused on human rights, its primary contributions to sustainability may be indirect, through promoting transparency and accountability, which can support broader sustainable development goals.