Css Performance
Helps with CSS, performance optimization as part of building frontend UIs and user experiences workflows.
Install on your platform
We auto-selected Claude Code based on this skill’s supported platforms.
Run in terminal (recommended)
claude mcp add css-performance npx -- -y @trustedskills/css-performance
Or manually add to ~/.claude/settings.json
{
"mcpServers": {
"css-performance": {
"command": "npx",
"args": [
"-y",
"@trustedskills/css-performance"
]
}
}
}Requires Claude Code (claude CLI). Run claude --version to verify your install.
About This Skill
What it does
This skill analyzes CSS code to identify potential performance bottlenecks. It provides insights into areas where the CSS can be optimized, such as reducing selector complexity and minimizing reflows. The tool aims to improve website loading times and overall user experience by suggesting concrete improvements to your stylesheets.
When to use it
- Slow page load times: If a webpage is taking too long to render due to complex CSS.
- Frequent visual updates: When animations or interactive elements cause noticeable delays in rendering.
- Large and complex stylesheets: For projects with extensive CSS codebases that need optimization.
- Mobile performance issues: To ensure fast loading times on mobile devices with limited bandwidth.
Key capabilities
- CSS analysis
- Performance bottleneck identification
- Selector complexity assessment
- Reflow detection
Example prompts
- "Analyze this CSS and suggest optimizations for performance: [paste CSS code]"
- "Identify any selectors in my stylesheet that are contributing to slow rendering."
- "Find potential reflow triggers within this CSS snippet: [paste CSS code]"
Tips & gotchas
The skill's effectiveness depends on the accuracy of the provided CSS code. Ensure you’re providing complete and representative snippets for best results.
Tags
TrustedSkills Verification
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Security Audits
| Gen Agent Trust Hub | Pass |
| Socket | Pass |
| Snyk | Pass |
🌐 Community
Passed automated security scans.