To structure an HTML document for both SEO and accessibility, you should:
- Use semantic HTML elements, such as headings (h1-h6), paragraphs (p), lists (ul, ol), and links (a), to describe the content and structure of the page.
- Use descriptive and meaningful titles and meta descriptions for each page, which can be added to the head of the document using the title and meta elements.
- Ensure that the content is accessible to users with disabilities by using proper alt text for images, labeling form controls, and providing proper headings and descriptive link text.
- Use header tags (h1-h6) to create a hierarchical structure for the content, with h1 being the most important and h6 being the least important.
- Ensure that the page is crawlable by search engines by avoiding the use of Flash or other technologies that are not easily crawlable by search engines.
- Make sure the website has a clear and organized URL structure, using meaningful and concise URLs that accurately describe the content of each page.
- Use internal linking to help search engines understand the relationships between pages on your website, and to make it easier for users to navigate your website.
By following these guidelines, you can create a well-structured HTML document that is both accessible and optimized for search engines.