While search engine rank is ultimately based hundreds of factors, it rests on three main characteristics: relevance, trust (impacted by technical and social factors), and authority (based on backlinks and other factors like domain age).

The core element of SEO is content; no amount of technical excellence or high-quality backlinks will help thin, low-quality, or irrelevant content rank well. The best content is highly relevant to its target keyword phrase (and therefore to corresponding searches), well-written, and easily digestible.

Though the broader practice of SEO has evolved over time (as detailed in SEO: The Movie), relevance and “digestibility” still form the basis of on-page SEO. Just as elements like a table of contents, chapter titles, and an index make a book easier to read, so on-page SEO makes web pages easier for both search engines to evaluate and human readers to absorb.

This interactive graphic illustrates 14 vital components of on-page SEO best practices. [Read more…]