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

faq

Use when adding FAQ sections to landing pages or blog posts, generating FAQPage JSON-LD from existing Q&A content, or validating that structured data on pages with FAQ sections is syntactically and semantically correct.

73.22k repo starsObserved in 1 repos
Development

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

favicons

Use when reviewing templates, rendered HTML, or shared components related to Implement favicons for all devices. Validate the final browser-facing markup, not just the source framework abstraction.

73.22k repo starsObserved in 1 repos
Development

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

figure-figcaption

Use when reviewing image assets, markup, and CDN or build transforms related to Use <figure> and <figcaption> for image captions. Check encoded size, rendered size, loading strategy, and above-the-fold impact together.

73.22k repo starsObserved in 1 repos
Testing & Quality

file-upload-accessibility

Use when reviewing templates, rendered HTML, or shared components related to Make file uploads accessible. Validate the final browser-facing markup, not just the source framework abstraction.

73.22k repo starsObserved in 1 repos
Design

filename-quality

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

73.22k repo starsObserved in 1 repos
Testing & Quality

find-npm-packages

Use when you need to find the 2-3 most popular and well-maintained npm packages relevant to a frontend checklist rule, validate they meet quality thresholds, and add them to the rule's frontmatter.

73.22k repo starsObserved in 1 repos
Research

first-contentful-paint

Use when auditing slow page loads, heavy assets, or rendering delays related to Optimize first contentful paint. Verify the actual bottleneck in DevTools, Lighthouse, or field data before recommending changes.

73.22k repo starsObserved in 1 repos
Testing & Quality

flashing-content

Use when reviewing rendered HTML, interactive components, or design-system patterns related to Prevent seizure-triggering flashing content. 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
Design