# Performance Optimization

> Frontend, backend, and query performance with evidence

**Subcategory:** Workflow  
**License:** MIT  
**Source:** https://github.com/addyosmani/agent-skills/blob/main/skills/performance-optimization/SKILL.md

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## When it is useful

Optimizes application performance across frontend, backend, queries, and databases. Use when performance requirements exist, when you suspect performance regressions, when Core Web Vitals or load times need improvement, when N+1 query patterns need fixing, or when profiling reveals bottlenecks.

## The Catch

Needs a metric. Profiling theater without a number is not this skill.