Great content is necessary but not sufficient. If search engines cannot crawl, understand and render your pages, that content will not rank. Technical SEO is the plumbing that makes everything else work.
Meta tags that matter
A descriptive title (≈50–60 characters) and a compelling meta description (≈150–160 characters) are still the most visible signals in search results. They do not directly rank you, but they drive the click.
Structured data
Schema.org markup, usually as JSON-LD, tells search engines what your content means — an article, a product, a FAQ. This can unlock rich results that stand out on the page.
Crawl control
- robots.txt controls what crawlers may fetch.
- A noindex tag controls what may appear in results.
- An XML sitemap helps crawlers discover your URLs.
- Canonical URLs prevent duplicate-content dilution.
Core Web Vitals
Speed and stability are ranking factors. Optimise images, defer non-critical JavaScript and reserve space for media to keep your Largest Contentful Paint, Interaction to Next Paint and Cumulative Layout Shift healthy.
A quick pre-flight checklist
- A unique title of 50–60 characters with the primary keyword near the front.
- A 150–160 character meta description written as ad copy, not a summary dump.
- One canonical URL, so duplicate versions collapse into a single ranking target.
- A single h1 that mirrors the page’s purpose, with a clean heading hierarchy below it.
- Descriptive alt text on meaningful images.
- Structured data (schema.org JSON-LD) that matches the page type.
- Open Graph and Twitter card tags for how the page looks when shared.
Indexing gotchas that quietly cost traffic
Three mistakes account for most indexing outages. Blocking pages with robots.txt instead of noindex removes them from the crawlable web but lets third-party links keep them discoverable — a search engine can index a page it cannot crawl. Putting canonical on one URL while another ranks fragments your footprint. And paginated listings without rel or self-canonical spread signal thinly across near-duplicate URLs. Handle those three and most duplicate-content and thin-page problems disappear.
Measuring the foundations
The “technical” in technical SEO exists to be measured: Search Console shows which pages were indexed and why others were not; the Site Audit view flags duplicate titles, broken canonicals and orphaned pages. Schedule a monthly pass through three reports — Index Coverage, Page Experience, and a crawl of the sitemap — and most regressions surface within days of shipping rather than quarters later.
- Compare “Indexed” against your sitemap: every gap is an instruction.
- Watch for “Crawled – currently not indexed”: usually thin content or a canonical problem.
- Run the Sitemap Generator, then submit the fresh file in Search Console.
