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DiologIR
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mockup-fidelity

Compare rendered web and React Native UIs against reference mockups.

Updated Apr 10, 2026
Search Tags:#automated testing#front-end development#design validation#ui comparison#ui fidelity
One-click install
npx skills add https://github.com/DiologIR/diolog-plugins --skill mockup-fidelity
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: mockup-fidelity
Source: https://github.com/DiologIR/diolog-plugins/tree/main/plugins/mockup-fidelity/skills/mockup-fidelity
Command: npx skills add https://github.com/DiologIR/diolog-plugins --skill mockup-fidelity

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires playwright, getcomputedstyle, odiff, axi-js, and includes scripts (resource) and references (resource) and assets (resource) components.

What problem does it solve?

This Skill ensures that implemented UIs accurately reproduce their reference mockups, detecting and resolving deviations through automated analysis and measurement.

Core Features & Use Cases

  • UI Fidelity Validation: Compares implemented UIs against their reference mockups to ensure pixel-perfect alignment.
  • Automated Comparison: Uses machine learning and automated tools to identify and report mismatches.
  • Functional Gap Identification: Identifies missing functionality or deviations from the mockup.
  • Use Case: When a web or mobile application is developed and needs to be reviewed for fidelity against its design mockups.

Quick Start

Use the mockup-fidelity skill to validate the UI of 'web-app' against 'mockup.web'. This will measure and compare the actual application UI against the provided web mockup.

Frequently Asked Questions about mockup-fidelity

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

FAQPage Schema
How do I validate my web application UI against design mockups automatically?▼

Automated UI fidelity validation compares rendered UI elements to reference mockups using browser-based measurement, screenshot comparison, and JSON diffing. It detects pixel-perfect deviations and functional gaps in web applications without manual inspection.

Can I use Playwright to compare React Native UIs against mockups?▼

Yes, automated mockup comparison handles both web and React Native UIs. It uses browser-based measurement, screenshot comparison via odiff, and JSON diffing to validate rendered elements against reference designs across platforms.

What is the best way to identify missing functionality from a design mockup?▼

Identifying missing functionality or deviations from a mockup requires automated analysis and measurement of the rendered UI. Comparing computed styles and screenshots against the reference design flags functional gaps and visual mismatches.

Does automated UI comparison work with getcomputedstyle for design verification?▼

Automated UI comparison uses getcomputedstyle to measure rendered UI elements and verify design fidelity. It extracts style data from the browser, compares it against the reference mockup, and reports mismatches through JSON diffing.

Why does my implemented UI look different from the mockup during automated testing?▼

UI fidelity deviations occur when implemented UIs fail to accurately reproduce reference mockups. Automated analysis measures browser-based rendering, compares screenshots with odiff, and identifies specific style mismatches causing the visual differences.

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