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Learn Technical SEO

Crawling, indexing, site speed, Core Web Vitals, structured data, and the technical foundations that allow great content to rank.

Audit and fix crawlability and indexability issues
Improve Core Web Vitals and page speed
Implement structured data correctly
Build the technical foundation that content relies on
Free forever No signup required Progress saved locally 15 lessons

Three tracks — pick your level. Progress is saved automatically in your browser.

BeginnerStart here. No prior knowledge assumed.
0 of 5 complete
Lesson 1
What is Technical SEO?
The technical foundations of SEO — why great content fails without the right technical setup.
Lesson 2
Crawling and Indexability
How Googlebot crawls the web, robots.txt, noindex, and the decisions that determine what Google sees.
Lesson 3
XML Sitemaps
What sitemaps do, how to create them correctly, and the common mistakes that render them useless.
Lesson 4
Site Architecture and Internal Linking
How URL structure and internal links distribute authority and signal what content matters most.
Lesson 5
HTTPS and Security Signals
Why HTTPS matters for SEO and the security headers that signal a trustworthy site.

What does robots.txt do?

What are Core Web Vitals?

IntermediateBuild on the basics.
0 of 5 complete
Lesson 1
Core Web Vitals
LCP, INP, CLS — what each measures, why Google uses them as ranking signals, and how to diagnose issues.
Lesson 2
Page Speed Optimisation
Images, JavaScript, CSS, server response time — the specific changes that measurably improve load speed.
Lesson 3
Mobile SEO
Mobile-first indexing, responsive design, and the specific mobile issues that affect ranking.
Lesson 4
Structured Data and Schema
JSON-LD, schema.org markup, rich results — how to implement structured data and what it earns.
Lesson 5
Duplicate Content and Canonicalisation
Why duplicate content is a technical SEO problem and how canonical tags, hreflang, and URL parameters cause or fix it.

What is a canonical tag?

What is mobile-first indexing?

AdvancedDepth, edge cases and strategy.
0 of 5 complete
Lesson 1
JavaScript SEO
How Googlebot handles JavaScript — rendering, the challenges for JS-heavy sites, and testing your site's renderability.
Lesson 2
International SEO
Hreflang, ccTLDs vs subdirectories vs subdomains, and the technical setup for multinational sites.
Lesson 3
Technical SEO Auditing
The systematic process for auditing a site's technical SEO — tools, what to look for, and prioritising fixes.
Lesson 4
Log File Analysis
Reading server logs to understand how Googlebot actually crawls your site vs how you think it does.
Lesson 5
Technical SEO for E-commerce
Faceted navigation, product variants, pagination, and the specific technical challenges of large catalogue sites.

What is JavaScript SEO?

What is hreflang?

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