URL Redirect Mapper is a simple and lightweight Chrome extension developed by SearchMinistry. As the name suggests, this tool allows website owners and SEO professionals to compare old and new URLs, helping them identify the best-matching new URLs during website migration or content restructuring.

With URL Redirect Mapper, you can easily compare the URL paths of old and new websites, while ignoring the root domain of both. This makes it a valuable tool for website owners who are looking to update their URLs without affecting the overall structure of their website.

The process is quite straightforward. First, you need to crawl the URL list of your old and new websites using a crawling tool. Once you have the list, simply download the .csv file and add the URLs you want to compare. URL Redirect Mapper will then provide you with the best matching new URLs.

Please note that due to Chrome Extension memory limits, you won't be able to map a large number of URLs at once. However, for most website migration and restructuring projects, this should not be an issue.