Typography × animation
Bold text looks slower when it moves. Here's why.
Set a bold and a light headline to the same 300ms ease-out. The bold one looks slower.
## Weight changes perceived speed
Heavy glyphs occupy more pixels. The eye tracks larger objects as slower.
All three columns use identical animation parameters. Typography does work animation cannot.
## Word-level stagger requires hierarchy
"Ship products users love." Four words. Word-level stagger works.
"The all-in-one platform for building and deploying modern web applications." Staggered word by word, that's a 600ms drip-feed the reader could scan in two seconds. Past six or seven words, switch to line-level or section-level.
## Display cuts change entrance sequencing
A text-optical-size font at 48px looks soft and over-spaced during animation. The eye catches imperfections faster during transitions.
A display-cut font at 48px arrives looking _finished_. For hero entrances, use the display optical size.
## Light fonts tolerate faster animations
300-weight at 200ms feels crisp. 700-weight at 200ms feels abrupt. The visual mass doesn't settle. Heavy typeface, slower animations. Light weight, faster animations.