# Skeleton — Pulse

> A pulse skeleton loading placeholder — a list feed of thumbnail rows gently fades its opacity in a soft staggered wave while content loads. Token-driven, design-system agnostic, with dark mode and reduced-motion support.

- Category: Skeleton
- Frameworks: Vanilla, React + CSS, React + Tailwind
- Design system: Sunset Coast
- Dark mode: yes
- Access: premium (Atheros AI Pass)
- Tags: loading, pulse, placeholder
- Page: https://builder.atheros.ai/components/skeleton-pulse
- Preview: https://d17nmjscumqk5d.cloudfront.net/builder/templates/tpl_builder_skeleton_pulse/preview-8d583eb05443.webp

## Features

- Opacity pulse — each row eases between ~0.45 and 1 on an infinite ~1.4s ease-in-out loop (opacity only, GPU-composited)
- Subtle per-row negative animation-delay so the four rows breathe as a soft wave
- List-feed layout — four rows, each a rounded-square thumbnail plus a two-line stack of varied widths
- Click or press Enter/Space to replay the load-in animation
- All colors, spacing, and radii driven by design-system tokens (`--skel-line`)
- Dark/light mode via the `body.dark` class
- Prefers-reduced-motion support
- Accessible: role=status, aria-busy, screen-reader loading label

## Common questions

**Which frameworks is Skeleton — Pulse available in?**

Skeleton — Pulse ships as Vanilla, React + CSS and React + Tailwind — HTML, CSS, JS and React source you can copy, download or clone into Atheros AI Builder.

**Is Skeleton — Pulse free?**

Skeleton — Pulse is a premium component. Anyone can preview it; the source, downloads and AI customisation are included with Atheros AI Pass.

**Does Skeleton — Pulse support dark mode?**

Yes. Skeleton — Pulse ships light and dark themes, both drawn from the Sunset Coast design system's tokens. Switch the preview to dark mode to compare them.

## Get the code

Preview Skeleton — Pulse live, then sign in to copy or download the source, apply another design system, or ask the AI assistant to change it: https://builder.atheros.ai/components/skeleton-pulse

Every component on https://builder.atheros.ai is also reachable from Claude Code, Cursor and Codex through the Atheros MCP server (paid plans). Component index: https://builder.atheros.ai/llms-components.txt