How does this skill detect visual changes?

It leverages the swift-snapshot-testing library to record reference images and generate failure snapshots when differences occur, which are then analyzed by Claude Vision.

Does it require specific iOS testing libraries?

Yes, it is specifically designed to work with the pointfreeco/swift-snapshot-testing framework for iOS development.

Can it compare code changes along with visual changes?

Absolutely. It performs code-level diffing to identify which specific tokens or constants caused the visual shift.

Does it support Dark Mode and Accessibility settings?

Yes, the skill includes patterns for testing multiple environments, including Dark Mode, Large Text (Dynamic Type), and different UI themes.

How do I update snapshots after an intentional design change?

The skill provides a workflow to toggle the record mode in your Swift tests, allowing you to overwrite reference snapshots once changes are approved.

Swift Design Diff

Name: Swift Design Diff
Author: no-problem-dev

byno-problem-dev

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Mobile Development

Detects and analyzes visual UI regressions in iOS applications using snapshot testing and AI-powered vision comparison.

Swift Design Diff is a specialized Claude Code skill designed for iOS developers to maintain visual integrity across design system updates. It streamlines the workflow of detecting UI changes by integrating Swift Snapshot Testing with Claude's vision capabilities to analyze pixel-level differences, identify root causes in source code, and ensure adherence to established design system tokens like spacing and color palettes. This skill bridges the gap between raw code changes and visual output, providing structured reports that help teams decide whether to accept or reject UI modifications.

Key Features

01Support for Dark Mode, Accessibility, and Theme variations

024 GitHub stars

03AI-powered visual analysis using Claude Vision

04Code-level token change identification

05Automated Swift Snapshot Testing integration

06Detailed visual diff reporting with impact analysis

Use Cases

01Verifying UI consistency after design system token updates

02Identifying unintended visual regressions during feature development

03Auditing component variations across different iOS device settings

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add no-problem-dev/claude-code-plugins design-diff

For use in Claude.ai and ChatGPT

Download Skill