SEO Content Optimizer by AIO.com.ai is a free Chrome add-on designed to enhance your content's search engine optimization. It provides a suite of tools to ensure your writing is not only original but also optimized for readability and relevance. Key features include plagiarism detection with highlighted sources, identification of redundant phrases, and keyword stuffing detection with actionable recommendations.

Additionally, the tool offers content relevance analysis, readability scoring, and visual representation of sentence structures. Users can track custom keywords and receive detailed density reports, making it a versatile tool for writers and marketers aiming to improve their SEO strategies. This add-on is a valuable resource for anyone looking to optimize their online content effectively.