Global Media Sustainability Framework v1.3

The Global Media Sustainability Framework (GMSF) is a voluntary standard developed by Ad Net Zero and the advertising industry, to help calculate and reduce greenhouse gas emissions from media campaigns. Built on both carbon-accounting and industry best practice, it aims to provide consistent methodologies across Digital, TV, Out-of-Home, Print, Audio, and Cinema. The GMSF enables advertisers and their partners to responsibly plan and buy media with environmental impact in mind. It increases transparency, accuracy, and progress toward a lower-carbon future.