High-Conversion Website Technical Specifications
Comprehensive guide for building responsive, high-performance websites
1. Architecture Requirements
- Implement a component-based architecture following atomic design principles
- Utilize semantic HTML5 markup with appropriate ARIA attributes for accessibility compliance (WCAG 2.1 AA)
- Structure the codebase with clear separation of concerns (presentation/logic/data)
- Implement proper asset optimization with lazy-loading for all below-the-fold images
- Configure appropriate cache-control headers and leverage browser caching
2. Frontend Technical Stack
- React.js for component rendering with functional components and hooks
- CSS-in-JS solution (preferably styled-components) with a design system approach
- Progressive enhancement strategy for graceful degradation
- Implement critical CSS path rendering for above-the-fold content
- Establish mobile-first responsive breakpoints (375px, 768px, 1024px, 1440px)
3. Performance Optimization
Target Metrics:
- Lighthouse performance score >90
- LCP < 2.5s
- FID < 100ms
- CLS < 0.1
- TTFB < 200ms where server configuration permits
- Implement code-splitting with dynamic imports for route-based chunking
- Implement resource hints (pre-connect, prefetch, preload) for critical resources
4. Conversion Elements
- Implement a strategic visual hierarchy with clear F-pattern or Z-pattern reading flows
- Place primary CTAs with 60px minimum touch target size and 3:1 contrast ratio
- Implement microcopy with action-oriented language adjacent to input fields
- Create form validation with inline error handling and real-time feedback
- Implement social proof elements with quantifiable metrics where appropriate
- Design scroll-triggered animations for key conversion elements using Intersection Observer API
5. Analytics Integration
- Set up event-based tracking for all user interactions
- Implement conversion funnel tracking with defined micro and macro conversions
- Configure appropriate UTM parameter handling for marketing attribution
- Implement cross-domain tracking where applicable
- Set up enhanced e-commerce tracking for product-related interactions
6. Security Implementation
- Implement proper Content Security Policy headers
- Configure appropriate CORS policies
- Implement rate limiting on form submissions
- Sanitize all user inputs with appropriate validation
- Implement CSRF protection on all form submissions
7. Technical SEO
- Implement structured data markup (JSON-LD) for appropriate schema types
- Create a programmatically generated sitemap.xml with lastmod attributes
- Implement canonical URLs and appropriate meta tags
- Configure proper robots.txt with crawl directives
- Ensure semantic heading hierarchy (h1-h6) throughout the site
8. Deployment Configuration
- Configure proper environment variables separation
- Implement CI/CD pipeline with pre-commit hooks for code quality
- Configure proper build optimization with tree-shaking
- Implement proper error logging and monitoring
- Configure appropriate redirects for legacy URLs
9. Output Deliverables
- Clean, documented source code with JSDoc comments where appropriate
- Comprehensive README with setup instructions and architecture decisions
- Performance optimization report with Lighthouse scores
- Mobile and desktop wireframes with annotated conversion elements
- Responsive breakpoint visualization
Source: X Post by Alessandro