Full Definition
On-page SEO is everything you control directly on your own website. While off-page SEO is about earning trust from other sites, on-page SEO is about communicating clearly to both Google and your visitors what a page covers and why it matters. The core on-page elements include: **Title tag**: The blue clickable headline that appears on Google search results. It should include your primary keyword and be compelling enough to earn a click. **Meta description**: The short summary below the title on search results. It does not directly affect rankings, but a well-written one dramatically improves click-through rate. **Headings (H1–H6)**: These give structure to your page. Your H1 should include the main keyword. Subheadings help both readers and Google skim the content. **Body content**: Google's algorithms have become sophisticated enough to understand topics, not just keywords. Covering a topic thoroughly — answering follow-up questions users typically have — signals expertise. **Images**: Every image should have descriptive alt text so Google (and visually impaired users) understand what it shows. **Internal links**: Linking to related pages on your own site helps Google discover content and passes ranking strength between pages. Actionable tip: For every page on your site, ask: if I removed the title and URL, could a stranger tell from the content alone exactly what this page is about? If the answer is no, your on-page SEO needs work.