Internal linking in HTML is straightforward: you wrap anchor text in an <a> tag with an href attribute pointing to another page on your site. The basic syntax is <a href="/services/seo">SEO Services</a> for a relative URL or <a href="https://yourdomain.com/services/seo">SEO Services</a> for absolute. Relative URLs are cleaner for internal links because they work across staging and production without changes. The anchor text matters more than most people realize. Use descriptive phrases that tell both users and search engines what the destination page covers. "Ottawa SEO agency" beats "click here" every time. Google uses anchor text as a relevancy signal, so if you're linking to a page about technical audits, say "technical SEO audit" in the link, not just "our services." Strategic placement drives the real value. Link from high-authority pages like your homepage or popular blog posts to pages you want to rank. We run a 500+ domain portfolio and the pattern holds: pages with more internal links from strong pages rank faster and higher. Aim for 2-5 contextual internal links per 1000 words of content, placed naturally where they add value for the reader. Common mistakes to avoid: don't use the same anchor text for every link to a page (looks manipulative), don't link to orphan pages that link to nothing else (creates dead ends), and don't over-optimize by stuffing keywords into every anchor. If you have 50 links all saying "best Ottawa plumber," that's a red flag. Implementation tips: use a consistent URL structure so links don't break, add title attributes sparingly (only when they add genuinely useful context), and avoid nofollow on internal links unless you're sculpting PageRank for a specific reason, which is rarely worth it anymore. Tools like Screaming Frog help audit your internal link structure to find broken links, orphan pages, or concentration issues where too much equity flows to low-value pages. At Ottawa SEO Inc., we map internal linking during site architecture planning, not as an afterthought, because fixing it later means rewriting hundreds of pages.