A PDF-file supports eco-friendly communication by reducing the need for paper printing. Businesses and individuals can share contracts, reports, and forms digitally instead of printing multiple copies. This saves paper, ink, and physical storage space. PDF files also support digital signatures, which eliminates the need to print, sign, and scan documents. By storing files electronically, organizations reduce waste and improve sustainability. A PDF-file can also be archived and reused without losing quality. These features make it an environmentally responsible choice for modern communication while still providing professional and secure document handling.