The WWF format is a PDF that cannot be printed out. It’s a simple way to avoid unnecessary printing. So here’s your chance to save trees and help the environment. Decide for yourself which documents don’t need printing out — then simply save them as WWF.
The WWF released its very own file format: The WWF (of course). A variation on the ubiquitous PDF,Â .wwf files simply can’t be printed.
From the home page of the .wwf file format:
Every day, entire forests are cut down to make paper. Paper that’s senselessly used to print out documents all over the world: websites, emails, even entire books, in spite of the fact that it’s easy to avoid printing by saving the document as a PDF. But even PDFs can sometimes also be printed out. So to stop unnecessary printing and encourage a new awareness about the use of paper, we’ve developed a new, green file format: WWF. A format that can’t be printed out. A simple idea that saves trees. Join in. Decide for yourself which of your documents don’t need printing — and save them as WWF.
The WWF is a PDF format that can not print it. So simple, unnecessary printing of documents to avoid the load on the environment and trees are saved. With your help. You decide what should not be printed, and save it in the WWF format.