Technical SEO improves how search engines crawl, render, and index your site — and how fast real users can use it. Content and links cannot fully overcome a broken, slow, or unindexable site.

Learning Objectives

By the end of this chapter, you will be able to:

  • Explain how crawling and indexing can be helped or blocked by site settings.
  • Describe Core Web Vitals and practical ways to improve site speed.
  • Explain mobile-first indexing, HTTPS, and structured data.
  • Carry out a basic technical SEO audit.

Crawl, Index, Serve

  • XML sitemap and clean internal links help discovery
  • robots.txt should not block important pages by mistake
  • Fix soft 404s, redirect chains, and duplicate URL variants (www/https)

Common indexing problems

Problem Symptom Fix
Page blocked in robots.txt Page never appears in search Remove the blocking rule
noindex tag left on by mistake Page disappears after a site launch Remove the tag on live pages
Duplicate URLs Same content at http, https, www, and non-www 301 redirect to one version; use canonical tags
Broken links (404) Users and bots hit dead ends Fix links or redirect to the closest page

Speed and Core Web Vitals

Site speed is a ranking and conversion factor. Core Web Vitals (e.g. LCP, INP, CLS) measure loading, interactivity, and visual stability. Practical levers:

  • Compress images; lazy-load below-the-fold media
  • Minify and defer non-critical JS/CSS
  • Use caching/CDN where appropriate
  • Host on reliable infrastructure
Metric Measures “Good” threshold
LCP (Largest Contentful Paint) Loading speed 2.5 s or less
INP (Interaction to Next Paint) Responsiveness 200 ms or less
CLS (Cumulative Layout Shift) Visual stability 0.1 or less

Mobile-First Indexing

Google indexes primarily with a mobile user-agent. Navigation, content parity, and tap targets must work on phones.

HTTPS and Structured Data

  • Serve the site on HTTPS
  • Add accurate structured data (Organization, Article, FAQ, Product, LocalBusiness) — never mark up fake reviews

Structured data (schema markup) can make a result eligible for rich results, such as star ratings, FAQs, prices, or event dates, which often improve click-through.

Local Technical SEO and Google Business Profile

For businesses with a physical presence, technical SEO pairs with Google Business Profile (GBP): correct categories, hours, photos, and review responses. “Near me” and Maps visibility often matter as much as organic blue links.

Nepal practice: Verify GBP, keep NAP consistent with the website footer, and test key templates on mid-range Android + 4G. A beautiful desktop site that times out on mobile will lose both SEO and ads Quality/landing experience scores.

Worked Example: A Ten-Point Technical Audit

A furniture shop asks for a quick technical check. The auditor works through:

  1. Search site:example.com.np to see roughly how many pages are indexed.
  2. Check Google Search Console for indexing errors and excluded pages.
  3. Confirm the XML sitemap exists and is submitted.
  4. Check robots.txt does not block product pages.
  5. Confirm all versions redirect to one HTTPS address.
  6. Run PageSpeed Insights on the home page and a product page (mobile).
  7. Test the site on a mid-range Android phone over 4G.
  8. Crawl the site for broken links and missing titles.
  9. Check product pages for structured data.
  10. Confirm the Google Business Profile matches the website’s name, address, and phone.

Findings: product images of 3–4 MB each (LCP 6 s), an old “noindex” tag on the sale category, and three different phone numbers across the site and profile. Fixing these three issues took two days and did more for traffic than a month of new blog posts.

Case study: Core Web Vitals for a news portal

A Nepal news site saw mobile LCP above 4s on article templates (hero images uncompressed). After image CDN + lazy-load + font subsetting, CrUX LCP improved into “needs improvement → good” territory and ad viewability rose because pages became interactive sooner. Technical SEO here was also revenue ops.

Learn more: web development services in Nepal.

Summary

Technical SEO makes sure search engines can crawl, render, and index a site, and that real users can use it quickly on mobile. Key elements include sitemaps, robots.txt, redirects and canonical URLs, Core Web Vitals (LCP, INP, CLS), mobile-first design, HTTPS, and structured data. For local businesses, a consistent Google Business Profile completes the picture. A simple audit often finds a few high-impact problems, such as huge images or accidental noindex tags.

Key Takeaways

  • A page that cannot be crawled or indexed cannot rank, however good its content.
  • Core Web Vitals measure loading (LCP), responsiveness (INP), and stability (CLS).
  • Google indexes the mobile version first; test on real mid-range phones.
  • Regular technical audits catch costly mistakes early.

Discussion Questions

  1. Run PageSpeed Insights on a Nepali business website. What are the biggest problems?
  2. Why are large images such a common problem on Nepali websites?
  3. How could a site launch accidentally remove a business from Google?

Exam-Style Questions

Short answer

  1. What is technical SEO?
  2. Name the three Core Web Vitals and what each measures.
  3. What is an XML sitemap?
  4. What is structured data?

Long answer

  1. Explain the main components of technical SEO and why they matter for rankings and conversions.
  2. Describe how you would carry out a basic technical SEO audit of a small business website in Nepal.