SEO has changed dramatically. Google's algorithms now prioritize User Experience (UX) metrics, site architecture, and semantic structure over the brute-force keyword stuffing of the past.
In 2024, if your site takes 5 seconds to load, it doesn't matter how great your content is—you won't rank. Here is our technical SEO checklist for building modern, high-ranking web platforms.
Core Web Vitals Are Non-Negotiable
Google officially uses Core Web Vitals as a ranking factor. You need to focus on:
- LCP (Largest Contentful Paint): How fast does the main content load? Keep this under 2.5 seconds. Optimize images (WebP/AVIF), use CDNs, and defer non-critical JS.
- FID/INP (Interaction to Next Paint): How quickly does the site respond to user interactions? React apps must be careful with heavy main-thread blocking operations.
- CLS (Cumulative Layout Shift): Does the page jump around as it loads? Ensure all images and dynamic elements have explicitly defined dimensions.
Semantic HTML and Structured Data
Search engines are blind; they rely on your HTML structure to understand the page.
- Use proper heading hierarchy (
<h1>down to<h4>). Never skip heading levels. - Wrap content in meaningful semantic tags:
<article>,<section>,<nav>,<aside>. - Schema.org: This is critical. Implement JSON-LD structured data for Articles, LocalBusiness, FAQ, and Products to enable rich snippets in search results.
Crawlability and Indexation
Don't let technical glitches hide your content from search engine bots.
- Sitemap & Robots.txt: Ensure
sitemap.xmlis automatically generated and submitted via Google Search Console. - Canonical Tags: Prevent duplicate content issues, especially on e-commerce sites with multiple URL parameters.
- Client-Side Rendering (CSR) vs Server-Side Rendering (SSR): Pure CSR React apps struggle with SEO. This is why we build exclusively with Next.js—to leverage SSR and Static Site Generation (SSG) for perfect indexability.