Every website is built on connections. When you click a hyperlink, you expect it to take you somewhere. When another site links to you, that connection builds your reputation in Google's eyes. But links break. Pages get deleted. Domains expire. Scammers create fake URLs that look real. A single broken link on a high-traffic page can cost you hundreds of visitors. A malicious link can steal passwords. A handful of dead backlinks can tank your search engine ranking. A Link Checker is the diagnostic tool that prevents these disasters. It scans URLs to verify they are working, safe, and valuable. Whether you are a website owner protecting your SEO, a business monitoring your brand's reputation, or just someone verifying a suspicious email link, this tool is essential. This guide explains exactly how link checkers work, why broken links silently kill your traffic, and how to use these tools to maintain a healthy, trustworthy online presence. What Is a Link Checker? A Link Checker is...