Testing & Quality skills

Browse reusable Agent Skills, each with a clear purpose and practical guidance.

element-hiding

Use when reviewing a website for layout and functionality issues caused by adblocker filter rules targeting common ad-related class names and IDs.

73.22k repo starsObserved in 1 repos
Testing & Quality

embedded-or-inline-css

Use when reviewing stylesheets, component styles, and responsive behavior related to Avoid embedded and inline CSS. Check the rendered layout across breakpoints and interaction states before proposing a fix.

73.22k repo starsObserved in 1 repos
Testing & Quality

empty-heading

Use when reviewing rendered HTML, interactive components, or design-system patterns related to Ensure headings contain text. Check native semantics first, then inspect keyboard behavior, focus flow, accessible names, and screen-reader output where relevant.

73.22k repo starsObserved in 1 repos
Testing & Quality

empty-links

Use when reviewing rendered HTML, interactive components, or design-system patterns related to Fix empty and broken links. Check native semantics first, then inspect keyboard behavior, focus flow, accessible names, and screen-reader output where relevant.

73.22k repo starsObserved in 1 repos
Testing & Quality

error-handling

Use when reviewing scripts, client components, bundles, or runtime behavior related to Implement proper error handling. Inspect both source code and the browser execution path so fixes target the real bottleneck or bug.

73.22k repo starsObserved in 1 repos
Testing & Quality

error-images

Use when reviewing image assets, markup, and CDN or build transforms related to Handle image loading errors gracefully. Check encoded size, rendered size, loading strategy, and above-the-fold impact together.

73.22k repo starsObserved in 1 repos
Testing & Quality

es-modules

Use when reviewing scripts, client components, bundles, or runtime behavior related to Use ES modules (import/export). Inspect both source code and the browser execution path so fixes target the real bottleneck or bug.

73.22k repo starsObserved in 1 repos
Testing & Quality

event-delegation

Use when reviewing scripts, client components, bundles, or runtime behavior related to Use event delegation for dynamic content. Inspect both source code and the browser execution path so fixes target the real bottleneck or bug.

73.22k repo starsObserved in 1 repos
Testing & Quality

favicon

Use when checking whether a site has a correctly configured favicon, auditing `<link rel='icon'>` tags in the `<head>`, or setting up favicon infrastructure for a new project.

73.22k repo starsObserved in 1 repos
Testing & Quality

fetchpriority-attribute

Use when optimising Largest Contentful Paint (LCP), reducing render-blocking resource contention, or fine-tuning resource loading order in the critical rendering path.

73.22k repo starsObserved in 1 repos
Testing & Quality