glimm

By Noman (iamnoman.com), glimm adds a GPU-composited sweep during navigation or any state change you wire up. Wrap the app in GlimmProvider, trigger via TransitionLink, useTransitionRouter, or InterceptLinks for all internal links. Six cosine-gradient palettes, ten easing curves, and tunable band width, with zero runtime dependencies and a lazy WebGL context that costs nothing until the first transition. The docs include copy-paste prompts for coding agents to install glimm in a Next.js layout.