A webmaster is a professional responsible for managing and maintaining a website. Their duties include ensuring the site runs smoothly, updating content, and optimizing performance. They often work with various tools and technologies to enhance user experience and troubleshoot issues. Webmasters also focus on search engine optimization (SEO) to improve a site's visibility on search engines. They may analyze website traffic and user behavior to make informed decisions about design and content. Overall, webmasters play a crucial role in the success of a website by ensuring it meets both user needs and technical standards.