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swiftui-performance-audit

Audit SwiftUI code for performance anti-patterns and provide optimization guidance.

42|11|Updated Dec 26, 2025
Search Tags:#code review#performance#debugging#optimization#swiftui#instruments
One-click install
npx skills add https://github.com/petekp/claude-code-setup --skill swiftui-performance-audit-petekp
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: swiftui-performance-audit
Source: https://github.com/petekp/claude-code-setup/tree/main/skills/swiftui-performance-audit
Command: npx skills add https://github.com/petekp/claude-code-setup --skill swiftui-performance-audit-petekp

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps diagnose and resolve performance issues in SwiftUI applications, such as slow rendering, janky scrolling, and high resource usage.

Core Features & Use Cases

  • Code Review: Analyzes SwiftUI code for common performance anti-patterns.
  • Profiling Guidance: Guides users on how to use Instruments for detailed performance tracing.
  • Root Cause Analysis: Identifies specific areas of code or architecture causing performance degradation.
  • Remediation: Provides actionable steps to optimize SwiftUI views and data flow.
  • Use Case: A developer notices their app's list scrolling is choppy. They use this Skill to get advice on identifying the cause (e.g., unstable IDs, heavy computations in body) and how to fix it.

Quick Start

Audit the performance of the provided SwiftUI code snippet for slow rendering issues.

Frequently Asked Questions about swiftui-performance-audit

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I fix janky scrolling and slow rendering in my SwiftUI app?▼

Identify causes of choppy SwiftUI list scrolling by reviewing code for unstable IDs, heavy computations in the body, or layout thrash. Analyzing these anti-patterns provides actionable steps to optimize view data flow and resolve scrolling jank.

What is the best way to reduce excessive view updates in SwiftUI?▼

Reduce excessive SwiftUI view updates through architectural analysis and code review. Identifying root causes of layout thrash and high memory usage provides actionable remediation steps to optimize your data flow.

How do I use Instruments to profile high CPU usage in SwiftUI?▼

Profile high CPU usage in SwiftUI using Instruments when standard code review is insufficient. Get guided instructions on running detailed performance traces to pinpoint the exact runtime bottlenecks causing degradation.

Why does my SwiftUI app have high memory usage and layout thrash?▼

High memory usage and layout thrash in SwiftUI are typically caused by architectural performance anti-patterns. Conducting a targeted code audit identifies these specific areas of degradation and provides remediation steps.

Can a code review find SwiftUI performance anti-patterns without running Instruments?▼

A SwiftUI code review can find performance anti-patterns without running Instruments. Analyzing the code directly addresses slow rendering and excessive view updates, offering actionable optimization steps before profiling is needed.

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