Technical SEO Guide: Crawling, Indexing, Speed & Schema

1. Crawling: Can Google Reach Your Pages?

Crawling is how Googlebot discovers and fetches your pages by following links and sitemaps. If a page cannot be crawled, it cannot be indexed or ranked. Start every audit here.

• Every important page should be reachable from another page through a normal link, ideally within three clicks of the home page.
• Fix broken internal links and orphan pages (pages with no links pointing to them).
• Make sure the server answers quickly and does not block Googlebot with firewalls or rate limits.
• Use the Crawl stats report in Google Search Console to see how often Google visits and which responses it gets.

Small business sites rarely have a crawl budget problem. It matters for large ecommerce and news sites with tens of thousands of URLs.

3. Robots.txt and Meta Robots

Robots.txt tells crawlers which paths they may fetch. It does not remove a page from Google. To keep a page out of search, use a noindex tag or password protection, and leave the page crawlable so Google can see the tag.

User-agent: *
Disallow: /admin/
Disallow: /cart/
Allow: /

Sitemap: https://www.example.com/sitemap.xml

<meta name="robots" content="noindex, follow">

• Never block your CSS, JavaScript or images, because Google needs them to render the page.
• Do not list private URLs in robots.txt, since the file is public.
• Test changes before going live. One wrong Disallow: / can remove a whole site from search.

5. Canonical Tags and Duplicate Content

A canonical tag tells Google which URL is the main version when similar pages exist. It is a strong hint, not a command.

<link rel="canonical" href="https://www.example.com/course/seo/">

• Pick one version of your site: with or without www, and HTTPS only, then redirect the rest with a 301.
• Every page should have a self-referencing canonical unless another page is the true original.
• Parameters, filters and tracking URLs should canonicalise to the clean URL.
• Avoid conflicting signals, such as a canonical pointing one way and a sitemap or redirect pointing another.

7. Mobile-first Indexing and HTTPS

Google mainly uses the mobile version of your page for indexing and ranking. Content that exists only on desktop may be ignored.

• Use a responsive design with the same content, headings, structured data and links on mobile and desktop.
• Make tap targets large enough and text readable without zooming.
• Serve every page over HTTPS with a valid certificate and fix mixed-content warnings.
• Avoid intrusive pop-ups that cover the main content.

9. Structured Data (Schema Markup)

Structured data uses JSON-LD to describe your page and business in a format search engines understand. It is not a direct ranking factor, but it can make pages eligible for rich results and helps machines understand entities.

{
  "@context": "https://schema.org",
  "@type": "LocalBusiness",
  "name": "Example Training Institute",
  "telephone": "+91-0000000000",
  "address": {
    "@type": "PostalAddress",
    "addressLocality": "Coimbatore",
    "addressRegion": "Tamil Nadu",
    "addressCountry": "IN"
  }
}

• Mark up only what is visible on the page. For FAQ schema, the questions must be on the page.
• Useful types for local sites: LocalBusiness, Organization, Course, BreadcrumbList and FAQPage. Google has limited FAQ rich results to a small set of sites, but the markup still helps machines read the page.
• Validate with the Rich Results Test and the Schema Markup Validator, and fix errors before publishing. See our guide to structured data and schema.

11. Internal Links and Site Structure

Internal links pass relevance and help Google understand which pages matter most.

• Group content into clear topics, with a main (pillar) page linking to supporting pages and each supporting page linking back.
• Use descriptive anchor text, such as "Local SEO course in Coimbatore" instead of "click here".
• Add breadcrumbs and keep URLs short, lowercase and readable.
• See how this works in practice on our Digital Marketing course page and its supporting pages.

A 10-Step Technical SEO Audit Process

1. Crawl the site with Screaming Frog and export errors.
2. Open Search Console and read the Page indexing and Crawl stats reports.
3. Check robots.txt and the sitemap for mistakes.
4. Review canonicals, redirects and duplicate pages.
5. Test Core Web Vitals on key templates.
6. Check mobile rendering and HTTPS.
7. Validate structured data on key page types.
8. Review internal links and orphan pages.
9. Fix the highest-impact problems first, then request indexing.
10. Re-check after two to four weeks and report the results.