Gutenberg Diagram
Reading Gravity
A design principle describing the natural eye movement pattern on evenly distributed content, dividing pages into four quadrants based on reading gravity from top-left to bottom-right.
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Origin
Edmund Arnold, a distinguished American typographer and teacher, developed the Gutenberg Diagram in the 1950s to describe the pattern of Latin reading gravity. The diagram divides a page into four quadrants—primary optical area (top left), strong fallow area (top right), weak fallow area (bottom left), and terminal area (bottom right)—reflecting how readers' eyes naturally move across text-heavy content.
Updated February 22, 2026