Practical engineering runbooks, terminal benchmarks, and code fixes categorized under Web & Core Web Vitals.
Why WooCommerce fires a heavy, uncached admin-ajax request on every page load, how it sabotages your TTFB and Core Web Vitals, and the surgical script to disable it safely whilst keeping cart totals accurate.
WordPress and modern web frameworks now add loading="lazy" to all images by default. Here is why applying it to your primary hero banner adds 1,500ms of artificial latency to Largest Contentful Paint, and the exact code to fix it.
Why swapping system fallbacks for custom web fonts shifts your entire page layout downwards, how font-display: swap can actually hurt your Core Web Vitals score, and how to achieve zero-CLS typography using modern font metric overrides.