I offer full-cycle development of secure, high-performance browser extensions for Chrome and Firefox, leveraging Manifest V3, React/TypeScript for dynamic UIs, TailwindCSS for styling, and modern bundlers like Vite for seamless cross-browser compatibility. Clients receive a complete package including source code, store-ready builds (.crx/.xpi), comprehensive QA reports, user/developer docs, and 30-day post-launch support to ensure quick approval and deployment.