Deadlink Checker

I built Dead Link Checker because I was tired of "free" tools that restricted deep crawling behind expensive paywalls or monthly subscriptions. Broken links are a silent killer for SEO and user trust, yet I found that most accessible tools were either limited browser extensions or complex SaaS platforms that felt like overkill for a quick audit. The project started as a simple command-line script for my own site maintenance. However, as I shared it with others, the process evolved from building a raw utility to creating a professional-grade desktop experience. I focused on shifting from basic sequential checking to a high-performance, multi-threaded engine that can handle up to 50 concurrent workers. The biggest evolution during this launch was the reporting system; I realized developers didn't just need to find errors—they needed to show them. This led to the development of our professional, color-coded PDF and CSV exports, turning a personal script into a complete data-driven tool for SEO pros and agencies.