SEO Optimized HTML Site Conversion

I’m migrating my existing WordPress business-promotion site to a clean, lightweight HTML build so it loads faster and ranks higher. I need the design and content replicated faithfully, but with tight, modern code (HTML5, CSS3, a dash of vanilla JS where necessary) that follows on-page SEO best practices from the ground up.

Homepage essentials:
• prominent contact form wired to my current email endpoint
• concise company overview section
• rotating or grid-based client testimonials that are crawlable, not image-only

SEO objectives are central to this project. Every template, partial and asset should be set up to:
• boost search-engine rankings through semantic markup, optimized headings and internal linking
• increase organic traffic by trimming bloat for quicker Core Web Vitals scores
• target my existing keyword set with properly weighted titles, meta descriptions, alt text and schema

Before delivery I’ll test the build with Lighthouse and Screaming Frog, so please keep HTML validity, mobile responsiveness and structured-data compliance in mind. Provide the complete site folder, minified and unminified source, along with a brief README that explains any build steps or npm/gulp tasks you use.