press release feedback | "First Ever Eco-Certified Computer Program: KDE's Popular PDF-Reader Okular"

[David Hurka]

I think it is also important that users have the choice which program to use. 
There are other programs which may be candidates for the same eco label. Maybe 
link to https://pdfreaders.org?

(My favourite example for such other programs is Atril, although its not 
listed on that page.)