The best way to do on-page SEO in WordPress is to create useful, high-quality content that addresses your users’ needs. Naturally incorporate your main keywords into your title, headings, URL, and content. Write compelling meta titles and descriptions, use a proper heading structure, add alt text to your images, and utilize internal linking to connect related pages. SEO plugins like Rank Math or Yoast can provide guidance, but the real difference is made by excellent content and a superior user experience.