A link checker developer designs and implements software tools that verify the integrity of links on websites. Their primary responsibility is to ensure that all internal and external hyperlinks function correctly, leading users to the intended destination. They identify broken or dead links, redirects, and any link-related issues affecting user experience or SEO. They also test the performance of links under different loads and conditions. They often collaborate with web developers and SEO specialists, providing them with reports and insights to improve website quality. Their work contributes to enhancing website usability, user satisfaction, and search engine ranking.