uiux-viewport-testing

Automate responsive design testing by resizing browser viewports and capturing screenshots.

Updated Feb 12, 2026

Search Tags:#frontend #responsive design #playwright #uiux #cross-browser testing #viewport testing

Ready to run

npx skills add https://github.com/kobogithub/knowledge --skill uiux-viewport-testing

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: uiux-viewport-testing
Source: https://github.com/kobogithub/knowledge/tree/main/skills/uiux-viewport-testing
Command: npx skills add https://github.com/kobogithub/knowledge --skill uiux-viewport-testing

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires playwright, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill addresses the challenge of ensuring web applications and websites display correctly and function as intended across a wide range of devices and screen sizes, preventing visual bugs and usability issues on different viewports.

Core Features & Use Cases

Responsive Design Testing: Validates UI adaptation across mobile, tablet, and desktop breakpoints.
Automated Screenshotting: Captures screenshots at specified resolutions for visual comparison.
Cross-Browser Compatibility: Leverages Playwright for consistent testing.
Use Case: Before launching a new feature, run this Skill to automatically test its appearance on an iPhone, an iPad, and a standard desktop monitor, ensuring a consistent user experience.

Quick Start

Run the viewport-test.js script to capture screenshots of the current website across mobile, tablet, and desktop viewports.

Frequently Asked Questions about uiux-viewport-testing

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

FAQPage Schema

How do I automate responsive design testing across different screen sizes?▼

Automate responsive design testing by running a script that resizes browser viewports to predefined mobile, tablet, and desktop breakpoints, capturing screenshots to validate UI adaptation and detect layout shifts.

How does viewport testing detect layout shifts and horizontal scrolling?▼

Viewport testing detects layout shifts and horizontal scrolling by resizing the browser across multiple breakpoints and validating UI adaptation, checking specifically for common responsive issues that break visual consistency.

Can I use Playwright to capture screenshots for cross-browser compatibility checks?▼

Yes, you can use Playwright to capture screenshots for cross-browser compatibility checks, leveraging its browser automation capabilities to ensure consistent testing and validate UI adaptation across different environments.

What is the best way to compare current UI against reference designs during testing?▼

The best way to compare current UI against reference designs is by integrating with visual regression tools that automatically contrast captured viewport screenshots against your reference designs to spot visual discrepancies.

Do I need Playwright installed to run automated viewport screenshots?▼

Yes, you need Playwright installed as a dependency to run automated viewport screenshots, because the Skill leverages this framework to automate browser resizing, capture screenshots, and execute cross-browser compatibility checks.

Why does my responsive design show horizontal scrolling on mobile breakpoints?▼

Responsive design shows horizontal scrolling on mobile breakpoints when UI elements fail to adapt correctly to smaller viewport widths; automated viewport testing validates UI adaptation to pinpoint these specific layout overflow issues.