Contentdetector.org

ContentDetector.org is a web service that estimates whether a passage of text was written by an AI model. Users paste text, upload a file or supply a URL, and the tool returns a score with section by section highlights and guidance on the passages it flags. The site says it evaluates patterns associated with GPT 5, Gemini, Claude and other large models, and it also offers an AI to human text converter. The service is aimed at publishers and SEO teams reviewing author workflows, agencies checking vendor deliverables, and educators and trainers screening essays and course material. The vendor states that headings, lists, citations and links are preserved when text is scanned, and that inputs are not used to train models. Access is available through a web app, a Chrome extension, desktop apps for Mac and Windows, and an iOS app. The vendor does not publish plan prices on its site. The company presents itself as a team of digital experts, developers and content strategists that builds detection and rewriting tools for editors, educators and businesses.