Individual skill

swiftui-performance-audit

Audit and improve SwiftUI runtime performance from code review and architecture. Use for requests to diagnose slow rendering, janky scrolling, high CPU/memory usage, excessive view updates, or layout thrash in SwiftUI apps, and to provide guidance for user-run Instruments profiling when code review alone is insufficient.

swiftui-performance-audit/SKILL.md

Read pinned source

Source commit 05ba982bfeb0d77d3c97d4542b0ee15034d05f84

What was checked

Matches the observed repository HEAD: Yes
Scanner rules are current: Yes
Repository scan complete: No
Skill scan complete: Yes
Observed behavior: Instructions only
Last checked: Nov 9, 2026

These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.

Install this skill

Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.

An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.

Repository context

Repository stars (not skill ratings): 4,027
Repository last updated: Mar 29, 2026
License: MIT

Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.

engineering Derived category
security Derived category

Files and excerpt

File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.

Browse files

SKILL.mdcore · 5,012 bytes
agents/openai.yamlasset · 242 bytes
references/code-smells.mddoc · 3,753 bytes
references/demystify-swiftui-performance-wwdc23.mddoc · 1,813 bytes
references/optimizing-swiftui-performance-instruments.mddoc · 1,837 bytes
references/profiling-intake.mddoc · 1,904 bytes
references/report-template.mddoc · 1,201 bytes
references/understanding-hangs-in-your-app.mddoc · 1,267 bytes
references/understanding-improving-swiftui-performance.mddoc · 2,262 bytes

Read excerpt


# SwiftUI Performance Audit

## Quick start

Use this skill to diagnose SwiftUI performance issues from code first, then request profiling evidence when code review alone cannot explain the symptoms.

## Workflow

1. Classify the symptom: slow rendering, janky scrolling, high CPU, memory growth, hangs, or excessive view updates.
2. If code is available, start with a code-first review using `references/code-smells.md`.
3. If code is not available, ask for the smallest useful slice: target view, data flow, reproduction steps, and deployment target.
4. If code review is inconclusive or runtime evidence is required, guide the user through profiling with `references/profiling-intake.md`.
5. Summarize likely causes, evidence, remediation, and validation steps using `references/report-template.md`.