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web-performance

100 / 100 · Low risk

Fine to try.

By nimadorostkar/Claude-Skills-collection (GitHub) · design · 36 stars · scanned at commit 1691932

Use when improving page load or runtime performance. Covers Core Web Vitals, bundle and asset optimization, rendering strategy, caching headers, and measuring on real hardware rather than a fast laptop. Trigger on "page loads slowly", "lcp is failing", "bundle is too big", "layout shift on load". Do not use for server load capacity — see the performance-testing skill; for slow queries behind the page, see the database-performance skill.

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'web-performance' ] || [ -L ~/.agents/skills/'web-performance' ]; then echo 'A skill folder named web-performance already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/nimadorostkar/Claude-Skills-collection' "$d" && git -C "$d" checkout --quiet '1691932edc17063d712a85d02bcc7a1cd3791057' -- 'skills/frontend/web-performance' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/frontend/web-performance' ~/.agents/skills/'web-performance' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'web-performance' ~/.claude/skills/'web-performance' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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