About the founder

PDF Differ was developed by me, Marc Foley, in collaboration with several art directors and graphic designers who work in the publishing industry.

When I'm not working on PDF Differ, I often work on a freelance basis for type foundries. I currently contract for Google Fonts, where my main task is developing software to test font updates to ensure they don't break the internet. Before this, I worked at the London type foundry Dalton Maag, where I specialized in non-Latin font engineering for clients such as Nokia and Intel.