What Technical SEO Covers
When you hear technical SEO, you might think of code or server settings. But the core idea is this: Google explores your site like a robot. The easier that robot can reach your pages, the better your site ranks. Technical SEO covers every adjustment made to smooth that journey.
- Crawling and indexing: Googlebot finding your pages and registering them in the system
- Site speed: How many seconds a page takes to load (desktop and mobile evaluated separately)
- Mobile compatibility: Your site displaying correctly on phone screens (Google evaluates mobile first)
- HTTPS security: The padlock in the address bar; without it Google applies a ranking disadvantage
- Site structure and URL pattern: A logical, predictable page hierarchy
- Broken links: Cleaning up 404 errors and dead-end links
- Structured data (schema): An extra code layer telling Google 'this is a product' or 'this is an FAQ'
A common misconception: 'My content is good, I don't need the technical details.' But if Google cannot reach a page, it never evaluates content quality at all. A page that cannot be crawled is a page that cannot rank.
Google Evaluates Mobile First
Since 2019, Google has applied mobile-first indexing. This means no matter how perfect your desktop site is, Google primarily evaluates you based on your mobile version. If menus collapse, text overflows, or buttons overlap on a phone, those problems directly affect your rankings.
You can check your site's technical status for free through Google Search Console. The Coverage report shows which pages are indexed, and the Core Web Vitals report lists speed and experience issues.
- Open a Google Search Console account and verify your site — problems surface there
- Check your speed score with PageSpeed Insights (pagespeed.web.dev); above 90 is ideal
- Confirm HTTPS is active; set up redirects for any pages still on HTTP
- Open your site on a phone and test that menus, forms, and images work correctly
- Run a broken link scan; fix or redirect URLs returning 404
- Make sure your robots.txt and sitemap.xml files are correctly defined