Starlight Glide
I liked the animated TOC indicator in Fumadocs and wanted the same thing in Starlight. Couldn’t replicate their exact CSS, so I built it as a native plugin instead.
What it does
Section titled “What it does”Adds a “snake” indicator to your TOC that stretches and snaps between headings as you scroll. On mobile it swaps that out for a circular reading progress ring in the navbar.
No animation libraries — just IntersectionObserver and some SVG path math. Styles use namespaced CSS variables so it picks up your existing theme automatically.