KDE's universal document viewer for PDF, EPUB, DjVu, comics and more, with annotation, form filling and digital signatures — the first software ever awarded the Blue Angel eco-label for resource efficiency.
The Preservation Rating scores how well this entry is archived — not how good the software is. It's calculated automatically from what's already on this page: working mirrors, documentation, a reproducible build, a clearly identified license, and complete metadata. Nothing here is entered by hand; it updates itself whenever the entry changes.
