TL;DR
- ·Field data (CrUX + RUM) is the only honest performance measurement.
- ·Canonicals, redirects, and sitemap hygiene catch 60% of indexing bugs.
- ·Log-file analysis is the fastest way to expose crawl-budget waste.
- ·Every audit ships an executive summary; the audit isn't the deliverable, the argument is.
Chapter 01
Crawlability
robots.txt, sitemap coverage, JS-rendered content, orphan pages, internal redirect chains.
Chapter 02
Indexation
Index-vs-canonical mismatches, soft 404s at scale, parameterised URL bloat, noindex misuse.
Chapter 03
Rendering
Server-rendered vs client-rendered content, hydration cost, third-party tag impact on INP.
Chapter 04
Performance
Field CWV via CrUX, RUM for real-user distribution, LCP element inspection, INP handler autopsy.
Chapter 05
Structured data
Rich Results test, schema.org validator, coverage of feature-earning types, monitoring for errors.
Chapter 06
International & migration
hreflang correctness, redirect maps, canonical strategy across locales.
Chapter 07
The executive summary
One page. Business impact, top 5 risks, top 5 opportunities, ordered backlog with owner and week.
Put it into practice
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