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Caching: Crucial for performance and repeat visits.
Responsive design (mobile, tablet, desktop): Ensure device usability.
At least 16px font size for all inputs: Avoid accessibility and usability issues.
Test for accessibility (ARIA roles, alt attributes, contrast): Inclusive design is critical.
Set accent color: Enhance the user experience with a cohesive visual identity.
Prefetching and preloads: Improve perceived performance by loading resources early.
Optimize page load speed (use tools like Lighthouse): Faster pages improve user satisfaction and SEO.
Reduced motion (respect prefers-reduced-motion): Avoid overwhelming users with animations.
Meta theme-color: Customize the browser UI for branding and polish.
HTML/body background color: Prevent white flashes during page loads.
Validate HTML, CSS, and JavaScript: Catch errors before they impact users.
Lazy loading for images and videos: Reduce unnecessary bandwidth usage.
Inputs have correct type or inputmode: Improve input usability on touch devices.
Focus rings: Ensure keyboard accessibility.
Check on Safari: Safari often behaves differently; verify functionality.
OG (Open Graph) title, image, description: Vital for sharing links on social platforms.
No dead areas around labels/inputs: Prevent usability issues on touch devices.
Replace default iOS tap highlight: Make the touch experience cleaner.
Selection color: Subtle polish for user experience.
Minify CSS, JS, and images: Essential for faster page loads.
Favicon and touch icons set: Adds professionalism and polish.
Cross-browser compatibility (Chrome, Edge, Firefox): Avoid functionality issues.
Verify proper 404 and error pages: Ensure fallback pages are helpful and branded.
Text wrapping and ellipsis for long content: Avoid broken UI on smaller screens.
Check on low power mode: Test that the app works well under constrained conditions.
1-5: Critical for usability, accessibility, and basic functionality.
6-15: High-priority enhancements for performance and polished UX.
16-25: Nice-to-have features that add refinement and prevent edge-case issues.

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