Allowing you to read the text down to the ink strokes.
Including Ars medicinae (The Art of Medicine).
Look for uploads titled "Codex Gigas Full Scan" or "The Devil's Bible Complete Latin Text." The National Library of Sweden (Best Interactive Option)
Opposite the Devil is a depiction of the Kingdom of Heaven, symbolizing the eternal struggle between good and evil.
They offer a high-definition interactive viewer. You can zoom in closely enough to see the texture of the vellum and individual ink strokes.