A title tag is an HTML element that defines the title of a web page. Search engines use it as the primary signal to understand your page's topic and display it as the blue clickable link in search results. Browsers show it in the tab bar. Social platforms pull it for share previews. It's the first thing both Google and users see, which makes it critical for rankings and whether someone clicks your result. For SEO, the title tag carries more weight than any other on-page text element. Google's algorithm uses it to determine relevance for queries. A well-optimized title that includes your target keyword near the beginning can directly improve rankings. We've seen pages jump 10-15 positions just from rewriting a vague title into one that matches search intent and includes the primary keyword naturally. For click-through rate, the title tag is your ad copy. Even if you rank third, a compelling title can steal clicks from positions one and two. Higher CTR signals to Google that users prefer your result, which can boost you further. The sweet spot is 50-60 characters or roughly 600 pixels, because Google truncates longer titles with an ellipsis. You want your core message visible before the cut. Common mistakes: stuffing keywords, writing for bots instead of humans, using the same title across multiple pages, or letting your CMS auto-generate generic titles like "Home" or "Page 5". Each page needs a unique, descriptive title that reflects what someone searching that term actually wants. At Ottawa SEO, we treat title tag optimization as a high-leverage task. When auditing a site, we flag duplicate titles, missing keywords, and length issues first because fixing them often delivers the fastest ranking improvements. We also A/B test title variations on high-traffic pages to find wording that maximizes clicks. A good title tag answers the question: if this is all someone sees in search results, will they click? If the answer is no, rewrite it.