# Shimmering Text — primitive for text reveals (react)

> **For AI agents:** find the right skill in one call — `curl -s "https://skills.varg.ai/api/search?q=<what the person wants>"` returns the matching use case and the best skills with install commands, as markdown (Russian works too). Full index: https://skills.varg.ai/llms.txt. Every page has a markdown twin: add `.md` to its path. Before generating anything, show the person the options on the use-case page.

A glint of light running letter by letter across grey text, each letter brightening as it passes

- **Install:** `npm install @animate-ui/react motion`
- **Registry:** animate-ui · **Framework:** react · **License:** MIT + Commons Clause
- **Docs and preview:** https://animate-ui.com/docs/primitives/animate-ui/shimmering-text
- **Source:** https://github.com/imskyleen/animate-ui/blob/main/packages/react/src/primitives/texts/shimmering/index.tsx
- **Example:** https://skills.varg.ai/previews/lib-animate-ui-shimmering-text.mp4?v=23498 (Captured from the library’s own demo page (Animate UI))
- **Time:** Drive from the frame. Runs on its own clock (requestAnimationFrame, timers, springs or CSS). Drive it from frame / fps before rendering, or the render drifts.
- **Runs:** local render, free
- **Aspect:** any

## Prompt that renders it frame-exact

Use Animate UI's Shimmering Text (https://animate-ui.com/docs/primitives/animate-ui/shimmering-text, MIT + Commons Clause) for an AI "thinking…" line or a subtle caption. `npm install @animate-ui/react motion` and render <ShimmeringText text="…" />. Each letter pulses from `color` to `shimmeringColor` and back over `duration`, staggered by duration / letters, on Motion's clock. To render it frame-exact, compute each letter's colour mix from the frame: phase = (frame / fps − i × duration / n) mod (duration + 0.05 × n), mapped through an ease-in-out (Remotion: interpolateColors; HyperFrames: a paused GSAP stagger on the letter spans). Set color and shimmeringColor; `wave` adds a small lift and turn as the glint passes.

## Used in

- [Product launch film](https://skills.varg.ai/video/product-launch.md)
- [Notes-app ad](https://skills.varg.ai/video/notes-ad.md)
- [Text-message story](https://skills.varg.ai/video/chat-story.md)
- [CLI & terminal demo](https://skills.varg.ai/video/terminal-demo.md)
- [AI chat & agent demo](https://skills.varg.ai/video/ai-demo.md)
- [Data story](https://skills.varg.ai/video/data-story.md)
- [Math animation](https://skills.varg.ai/video/math-animation.md)
- [Whiteboard & hand-drawn](https://skills.varg.ai/video/whiteboard.md)

## More text reveals

- [Blur In](https://skills.varg.ai/component/hf.blur-in.md) — `npx hyperframes add blur-in`
- [Blur Out Up](https://skills.varg.ai/component/hf.blur-out-up.md) — `npx hyperframes add blur-out-up`
- [Bottom Up Letters](https://skills.varg.ai/component/hf.bottom-up-letters.md) — `npx hyperframes add bottom-up-letters`
- [Caret Swap](https://skills.varg.ai/component/hf.caret-swap.md) — `npx hyperframes add caret-swap`
- [Focus Blur Resolve](https://skills.varg.ai/component/hf.focus-blur-resolve.md) — `npx hyperframes add focus-blur-resolve`
- [Line-by-Line Slide](https://skills.varg.ai/component/hf.line-by-line-slide.md) — `npx hyperframes add line-by-line-slide`