The correct use of HTML tags according to their meaning — H1 for the main title, H2 for sections, and so on. Search engines read these tags to understand your content's structure. A site without semantic HTML makes ranking significantly harder.
Example
Using <nav>, <main>, <article> and <button> instead of plain <div>s helps screen readers, search engines and AI crawlers understand the page.
Related resources
Glossary
Hreflang
Hreflang is an HTML tag that tells search engines which language and region a page targets.
Start with clean technical SEO — fast load times, proper heading structure, mobile responsiveness — then build content around what your actual customers are searching for. Most sites over-invest in keywords and under-invest in structure. Google needs to crawl and understand your site before content quality even matters. Fix the technical foundation first, then focus content on answering real customer questions clearly.
Your website likely isn't ranking due to a combination of thin or irrelevant content, weak technical SEO, slow load speed, or a lack of quality backlinks pointing to your site. Run a technical audit first — broken links, missing metadata, and slow pages are common and fixable quickly. If technical health is solid, the issue is usually content: not enough pages targeting real search intent, or content too generic to compete with more specific pages.