Full-Site Speed Optimization

My primary goal is to get my website loading lightning-fast on every device, whether visitors arrive by phone, tablet, or desktop. Loading speed is the first priority, so I need a specialist who can dive straight into the two main culprits: oversized images/media and unminified or bloated scripts.

Here is what I want to see when the work is complete:
• Home page, product/service pages, and blog posts each scoring in the green on Google PageSpeed Insights and Lighthouse for both mobile and desktop.
• Compressed, properly formatted images served in next-gen formats (WebP/AVIF) without quality loss.
• Clean, minified JavaScript and CSS, with critical resources inlined or deferred so the above-the-fold content paints instantly.
• No visual or functional regressions—design remains pixel-perfect and interactive features work exactly as before.

You are free to implement lazy loading, code splitting, server-side caching, or any other best-practice technique; just make sure the end result is a visibly faster site and measurable performance gains across the sections listed above.

Once everything is running smoothly, please provide a brief summary of the changes (plugins used, scripts removed or combined, image handling approach) so future maintenance is straightforward.