Resume Optimizer Pro is an AI-powered tool that helps job seekers optimize their resumes for Applicant Tracking Systems (ATS). It uses real ATS scoring logic instead of simple keyword matching to increase interview chances. Users can upload a resume and optionally a job description; the tool provides a match score, skills gap analysis, and a one-click AI auto-optimizer that rewrites the resume to improve compatibility. Additional features include targeted cover letter generation, a resume builder, personalization to reduce AI-sounding language, and a browser extension that works on LinkedIn, Indeed, Glassdoor, ZipRecruiter, and Dice. The tool also offers an API for staffing firms and HR platforms. Resume Optimizer Pro has a free tier and a Pro subscription, with a 30-day interview challenge money-back guarantee.