The most important on-page elements are optimised page titles, meta descriptions, headings, content, image alt text, site speed, internal linking, URL structure, and schema markup. Getting these right makes it easier for search engines to crawl, index, and understand your pages.

To optimise for a keyword, use it naturally in the page title, headings, content, URLs, meta descriptions, alt text, and schema where it fits. Ensure surrounding content supports its relevance. Also link internally to and from related pages.

Proper heading structure (H1 to H6 tags) helps search engines understand page topics and keyword relevance. Use target keywords in headings while maintaining a natural structure that also guides site visitors.

Schema markup is code that highlights key page elements like people, events, products, businesses, etc. Adding appropriate schema can enhance how search engines interpret and display your pages in SERPs.

Ideal URL structure uses hyphens to separate descriptive keywords and is easy for visitors to understand. Dynamic URLs can also work well for search performance if appropriately optimised.

Yes, with growing mobile usage, having a mobile-friendly responsive site is extremely important. Ensure content is easy to read on mobile screens and site speed is fast.