MagicSEO
Section 02 · 13 articles

Technical SEO: Make Your Site Crawlable, Indexable, Understandable

Technical SEO is the foundation of search visibility. Without it, even the best content may be ignored by search engines. This section starts with crawling and indexing principles, then progressively covers robots.txt, sitemap, URL structure, site speed, mobile optimization, structured signals, and more—helping you build a solid technical foundation for your website.

PrerequisiteIf you haven't read the Getting Started section yet, we recommend starting there. It helps establish a comprehensive understanding of SEO—Technical SEO builds on that foundation.
1

Crawling & Indexing

Understand Googlebot's URL discovery, crawl budget, indexing criteria, and JavaScript rendering delays. Includes Google Search Console troubleshooting and server log analysis basics.

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2

robots.txt Guide

Syntax, wildcards, common configurations, troubleshooting methods—properly control crawler behavior.

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3

Sitemap

XML format and tags, size limits and sitemap indexes, image/video extensions, multilingual hreflang configuration, generation and submission.

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4

URL Structure

Semantic naming, hyphens and lowercase, directory depth, parameter handling, URL stability and normalization—with this site's URL design example.

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5

Canonical Tags

Duplicate content causes, rel=canonical principles and self-referencing, coordination with 301/noindex/hreflang—common errors and examples.

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6

Site Speed

Core Web Vitals explained, image/CSS/JS/server/font optimization, mobile speed improvements in practice.

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7

Mobile Optimization

Mobile-first indexing, responsive design, viewport configuration, mobile usability essentials—with this site's responsive example.

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8

HTTPS & Security

SEO value of HTTPS, TLS certificate types, mixed content fixes, HTTP→HTTPS migration and HSTS security hardening.

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9

Internationalization hreflang

Language-region codes, three implementation methods, bidirectional pairing, x-default with canonical—this site's multilingual design.

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10

HTTP Status & Redirects

200/301/302/404/410/5xx and soft 404s, 301 vs 302, redirect chains and troubleshooting methods.

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11

JavaScript SEO Basics

Two-phase rendering, CSR/SSR/SSG comparison, indexable content and links, proper handling of lazy loading and infinite scroll.

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12

Pagination, Facets & Parameters

Proper canonical for pagination, e-commerce facet URL explosions, parameter control tools, and a decision framework.

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13

Site Migration Checklist

Migration types, pre-migration prep, URL mapping and 301s, day-of-migration and post-migration monitoring—complete checklist.

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