PlagiarismCheck is a state-of-the-art AI tool crafted to uncover plagiarism in written works, ensuring their originality and integrity. It is extensively utilized by students, educators, writers, and professionals to confirm the uniqueness of their documents. The software examines text by comparing it against an extensive collection of online resources, scholarly articles, and published materials to detect any copied or non-original content. Users have the option to upload files, insert text directly, or input URLs for examination. PlagiarismCheck utilizes advanced algorithms to juxtapose the provided content with its database, marking possible matches and furnishing a comprehensive similarity report. This report details the percentage of original content, identifies flagged sections, and provides links to the sources where matches were detected. The tool also offers recommendations for paraphrasing or properly citing sources to enhance originality. PlagiarismCheck accommodates various file formats, such as Word documents, PDFs, and plain text, ensuring versatility and ease of use. It is especially beneficial in academic contexts, where upholding academic honesty is paramount, and in professional arenas where original content creation is vital. The tool is accessible through a web-based interface, offering simplicity and convenience. Moreover, PlagiarismCheck provides integration capabilities with learning management systems (LMS) and content management systems (CMS), facilitating the plagiarism detection process for educational institutions and businesses. With its powerful features and dependable performance, PlagiarismCheck is a reliable choice for anyone aiming to ensure the originality of their written content.