🟢 Status: Live
🌐 Live Demo: DeepDay
🗼 Lighthouse Score: Full Report
🛒 Get Template: Available on Gumroad
Type: Landing Page
Role: Prodcut Engineer
Tech Stack: Astro 5, Tailwind CSS v4, TypeScript
The Challenge The market for SaaS landing page templates is saturated with “heavy” WordPress themes and bloated React templates. As a Senior Product Engineer, I identified a gap for a template that prioritizes Core Web Vitals without sacrificing visual fidelity. The challenge was to achieve a perfect 100/100 Lighthouse score while retaining complex UI elements like glassmorphism and animations.
The Solution I engineered DeepDay, a template that leverages Astro 5’s Island Architecture.
- Zero-JS by Default: Static HTML is served for 90% of the page. JavaScript is only hydrated for interactive components (like the mobile menu pricing toggle).
- Tailwind v4 Adoption: I utilized the latest Tailwind engine for lightning-fast build times and zero runtime CSS overhead.
- DX (Developer Experience): I created a centralized
site.tsconfiguration layer, effectively “CMS-ifying” the code so users can rebrand the entire site without touchingdivs.
The Result
- Performance: Sub-100ms First Contentful Paint (FCP) on mobile networks.
- Market Impact: [Number] downloads in the first month.
- Conversion: Designed with a psychology-backed layout flow (Problem -> Agitation -> Solution).