loaders-spinners
Use when creating loading indicators, spinners, progress bars, or skeleton screens to communicate system status
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/dylantarre/animation-principles --skill loaders-spinners- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads loaders-spinners automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Loader & Spinner Animation Principles
Apply Disney's 12 principles to loading indicators for engaging, informative wait experiences.
Principles Applied to Loaders
1. Squash & Stretch
Bouncing dot loaders should squash on landing, stretch while rising. Creates life-like, playful motion.
2. Anticipation
Before progress completes, bar can briefly pause or slow. Spinners can decelerate before stopping. Signals completion coming.
3. Staging
Loader should be clearly visible but not block content unnecessarily. Skeleton screens stage where real content will appear.
4. Straight Ahead & Pose to Pose
Organic loaders (bouncing dots) benefit from straight-ahead. Progress bars use pose-to-pose (0% to 100% keyframes).
5. Follow Through & Overlapping Action
Multi-part loaders should have elements offset in timing. Dot 1 bounces, dot 2 follows 100ms later. Creates rhythm.
6. Ease In & Ease Out
Spinning: use ease-in-out per rotation cycle or linear for continuous. Bouncing: ease-in up, ease-out down.
7. Arcs
Orbital loaders should follow true circular arcs. Bouncing elements follow parabolic arcs like real physics.
8. Secondary Action
While spinner rotates (primary), glow pulses (secondary). Skeleton shimmer is secondary to skeleton shape.
9. Timing
- Spinner full rotation: 800-1200ms
- Bounce cycle: 500-800ms
- Skeleton shimmer: 1500-2500ms
- Progress bar smooth updates: 200ms
- Dot stagger: 100-150ms
- Pulse: 1000-2000ms
10. Exaggeration
Playful brands can use bouncy, elastic loaders. Professional contexts need subtle, smooth spinners. Match brand energy.
11. Solid Drawing
Maintain consistent stroke widths. Circular paths should be true circles. Progress bars should fill evenly.
12. Appeal
Engaging loaders reduce perceived wait time. Boring spinners feel slower. A delightful loader can turn frustration into momentary joy.
CSS Implementation
.spinner {
animation: spin 1000ms linear infinite;
}
@keyframes spin {
to { transform: rotate(360deg); }
}
.bounce-dot {
animation: bounce 600ms ease-in-out infinite alternate;
}
.bounce-dot:nth-child(2) { animation-delay: 100ms; }
.bounce-dot:nth-child(3) { animation-delay: 200ms; }
@keyframes bounce {
from { transform: translateY(0) scaleY(1); }
to { transform: translateY(-20px) scaleY(0.9); }
}
.skeleton {
background: linear-gradient(90deg, #eee 25%, #f5f5f5 50%, #eee 75%);
background-size: 200% 100%;
animation: shimmer 2000ms infinite;
}
@keyframes shimmer {
to { background-position: -200% 0; }
}
Key Properties
transform: rotate, translateY, scaleanimation: infinite loopsbackground-position: shimmer effectsstroke-dashoffset: SVG spinnersopacity: pulsing effects
FAQ
What does the loaders-spinners skill do?
Use when creating loading indicators, spinners, progress bars, or skeleton screens to communicate system status
How do I install loaders-spinners?
Run npx skills add https://github.com/dylantarre/animation-principles --skill loaders-spinners in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/loaders-spinners/ (personal) or .claude/skills/loaders-spinners/ (project).
Which AI agents can use loaders-spinners?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is loaders-spinners safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains loaders-spinners?
It is published by dylantarre in dylantarre/animation-principles. It has 508 recorded installs.
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