Technical SEO is the work that lets search engines and AI crawlers find, render, index and trust your pages: crawlability, indexing, site speed (Core Web Vitals), structured data, and clean URLs. Get the technical foundation right and every other SEO effort compounds on top of it. This is the checklist, with the deep-dive cheatsheet for each piece.
The technical SEO checklist
Work top to bottom. If engines cannot crawl, render and index you, nothing above the fold matters.
| Area | What to get right | Go deeper |
|---|---|---|
| Crawl control | A clean robots.txt and an XML sitemap. No accidental blocks. | Robots.txt |
| Indexing | Canonical tags, no index bloat, correct status codes. | HTTP status codes |
| Site speed | Pass Core Web Vitals: LCP, INP, CLS. | Core Web Vitals |
| Structured data | Valid JSON-LD for articles, products, FAQs, organisation. | Schema |
| On-page tags | One title and H1 per page, correct meta tags. | Meta tags |
| Measurement | Monitor crawling, indexing and CWV in Search Console. | Search Console |
| AI crawlability | Let AI bots in and serve server-rendered HTML. | AI crawler |
The crawl-to-index pipeline
A page must pass every stage to rank. Most technical problems are a stage that fails silently.
| Stage | What can break it |
|---|---|
| Discover | No internal links, missing from the sitemap |
| Crawl | Blocked in robots.txt, server errors, slow response |
| Render | Content only appears after JavaScript the crawler does not run |
| Index | Noindex tag, canonical pointing elsewhere, thin or duplicate content |
| Rank | Relevance, authority and page experience (the rest of SEO) |
This is one pillar of SEO fundamentals. For the AI-search side, see the AI SEO cheatsheet.
Frequently asked questions
What is technical SEO?
Technical SEO is optimising your site so search engines and AI crawlers can find, render, index and trust it: crawlability, indexing, site speed, structured data and clean URLs. It is the foundation the rest of SEO builds on.
What is the most important technical SEO task?
Making sure your important pages can be crawled and indexed: a clean robots.txt, a working XML sitemap, correct canonicals and no accidental noindex. If a page cannot be indexed, nothing else can rank it.
How often should I do a technical SEO audit?
A full audit quarterly for most sites, with continuous Search Console monitoring between audits. Large or fast-changing sites (big ecommerce, news) need monthly checks.
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Chief of Staff at StudioHawk, Australia's largest dedicated SEO agency. Specialising in AI search visibility, technical SEO, and organic growth strategy. Leading a team of 120+ across Melbourne, Sydney, London, and the US. Book a free consultation →