An SEO plugin is a software tool that helps optimize a website for search engines by improving visibility, rankings, and traffic.

In WordPress, for example, SEO plugins like Yoast SEO, Rank Math, or AIOSEO assist with:

  • Adding meta titles and descriptions
  • Generating XML sitemaps
  • Optimizing keywords and content readability
  • Managing schema markup (rich snippets)
  • Improving social media previews

They make SEO more accessible by automating technical tasks and guiding users through best practices.