Resume Optimizer is an AI-powered tool that analyzes and optimizes resumes. It checks resumes for spelling and grammar errors, provides optimization suggestions, and can tailor content to specific jobs and industries. The platform also offers AI-generated complete new paragraphs for users to copy and paste into their resumes. Additionally, it provides the functionality to write cover letters and emails with AI. By optimizing resumes, it helps users avoid embarrassing errors, makes resumes more appealing, and increases attention from recruiters and employers.