Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-*.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating user timing marks.
Install
npx skills add microsoft/vscode --skill cpu-profile-analysisnpx skills add microsoft/vscode --skill cpu-profile-analysis -a claude-code -gnpx skills add microsoft/vscode --skill cpu-profile-analysis -a codex -ggemini skills install https://github.com/microsoft/vscode.git --path .github/skills/cpu-profile-analysisgh skill install microsoft/vscode cpu-profile-analysisgit clone --depth 1 https://github.com/microsoft/vscode /tmp/microsoft__vscode
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/microsoft__vscode/.github/skills/cpu-profile-analysis ~/.claude/skills/cpu-profile-analysis # Claude Code
cp -R /tmp/microsoft__vscode/.github/skills/cpu-profile-analysis ~/.agents/skills/cpu-profile-analysis # Codex, Cursor, Gemini CLI, Copilot, OpenCode