Chapter 61: On-Page SEO Fundamentals

Performing an On-Page Technical SEO Audit

**Part 13: SEO & Social Sharing** — Chapter 61: On-Page SEO Fundamentals with HTML

LEARNING OBJECTIVES ⌵
  • Run automated technical SEO audits using Google Lighthouse, Screaming Frog, and Google Search Console.
  • Verify meta tag presence, title length, canonical URLs, and heading monotonicity across all pages.
  • Identify crawl errors, broken internal links (404s), and missing alt attributes.
  • Implement an automated SEO linter in your CI/CD test suite.
🎬 INTERACTIVE VISUAL PIPELINE Core Architecture Simulation
🌐
1. Input
Directives & Tags
⚙️
2. Parse
Tokenizer & AST
🌳
3. Layout
Box Model & Flow
🎨
4. Render
GPU Paint & Composite
PHASE 1: INPUT & DIRECTIVES
Browser receives declarative markup stream, parsing tag tokens and initializing component state.

Technical SEO Audit Checklist Matrix

Audit Item Validation Rule Pass Criteria
<title> Tag 50–60 characters, contains primary keyword Unique across entire domain
Meta Description 120–155 characters, includes call-to-action Unique per URL
Heading Structure Exactly one <h1>, logical <h2>/<h3> hierarchy No heading levels skipped
Canonical Link Absolute URL matching preferred protocol and domain <link rel="canonical" href="...">
Image Optimization All non-decorative images have descriptive alt WebP/AVIF formats + explicit dimensions
Mobile Viewport <meta name="viewport" content="width=device-width, initial-scale=1.0"> Present on all HTML pages

📌 Key Takeaways

  • Regularly audit your HTML codebase with automated tools to catch duplicate titles and broken meta tags before deploying.
  • Combine technical HTML validation with Google Search Console coverage reports to maintain clean indexing.
  • --

❓ Knowledge Check

1. Which of the following is correct?

2. Which of the following is correct?