🗂 The essential checklist for modern web development, for humans and AI agents
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thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when auditing slow page loads, heavy assets, or rendering delays related to Implement Google Consent Mode v2. Verify the actual bottleneck in DevTools, Lighthouse, or field data before recommending changes.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing support UI across multi-page flows such as checkout, onboarding, account recovery, or support journeys. Compare multiple pages in the same variation instead of reviewing a single page alone.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing scripts, client components, bundles, or runtime behavior related to Remove console statements in production. Inspect both source code and the browser execution path so fixes target the real bottleneck or bug.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing scripts, client components, bundles, or runtime behavior related to Prefer const and let over var. Inspect both source code and the browser execution path so fixes target the real bottleneck or bug.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when auditing metadata, crawlability, structured data, or indexability related to Create a comprehensive Contact page. Verify the rendered HTML and HTTP response rather than relying only on source files.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing stylesheets, component styles, and responsive behavior related to Use container queries for component-level responsiveness. Check the rendered layout across breakpoints and interaction states before proposing a fix.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when auditing article or blog pages for date markup, generating Article JSON-LD with datePublished/dateModified, or checking whether a CMS template surfaces dates correctly.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing headers, forms, cookies, or third-party integrations related to Implement a content security policy. Validate the effective browser and HTTP behavior in a production-like environment.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing rendered HTML, layout components, or design-system patterns that may depend on presentation for meaning. Check the DOM order, semantic structure, form relationships, and whether CSS generated content carries essential information.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when setting up integration testing for a frontend-backend API boundary, evaluating whether two services are safe to deploy independently, or replacing slow end-to-end tests with contract tests.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing a website for GDPR/CCPA compliance, specifically whether cookie consent is obtained before non-essential cookies are set.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing image assets, markup, and CDN or build transforms related to Prioritize loading critical images. Check encoded size, rendered size, loading strategy, and above-the-fold impact together.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when auditing slow page loads, heavy assets, or rendering delays related to Minimize critical request chains. Verify the actual bottleneck in DevTools, Lighthouse, or field data before recommending changes.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing CI coverage, automated checks, or test strategy related to Test across all major browsers. Focus on whether the rule is continuously verified, not just documented.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing security-sensitive web apps, SharedArrayBuffer usage, worker-heavy apps, editors, or measurement features that require cross-origin isolation. Check both headers and real browser behavior.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing scripts, client components, bundles, or runtime behavior related to Handle cross-origin requests securely. Inspect both source code and the browser execution path so fixes target the real bottleneck or bug.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when implementing animated gradients, complex CSS transitions that involve custom property values, or building a typed design token system where custom property misuse should produce visible errors.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing stylesheets, component styles, and responsive behavior related to Use CSS containment to limit repaint scope. Check the rendered layout across breakpoints and interaction states before proposing a fix.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing stylesheets, component styles, and responsive behavior related to Inline critical CSS for faster rendering. Check the rendered layout across breakpoints and interaction states before proposing a fix.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing stylesheets, component styles, and responsive behavior related to Use CSS custom properties for design tokens. Check the rendered layout across breakpoints and interaction states before proposing a fix.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when auditing slow page loads, heavy assets, or rendering delays related to Optimize CSS file size. Verify the actual bottleneck in DevTools, Lighthouse, or field data before recommending changes.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing stylesheets, component styles, and responsive behavior related to Use CSS Grid for two-dimensional layouts. Check the rendered layout across breakpoints and interaction states before proposing a fix.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing stylesheets, component styles, and responsive behavior related to Minify all CSS files. Check the rendered layout across breakpoints and interaction states before proposing a fix.
thedaviddias/Front-End-Checklist
Skill Claude CodeCodex
Use when reviewing stylesheets, component styles, and responsive behavior related to Load CSS without blocking render. Check the rendered layout across breakpoints and interaction states before proposing a fix.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: