A redirect tells the server: anyone asking for this old page should be sent to that new page instead. Every website that has ever renamed a page, retired a product or changed its domain needs a list of these rules, and writing each one by hand in your server's own syntax is slow and easy to get wrong.
This "Bulk Redirect Generator" does the repetitive part for you. Paste a list of old and new URLs – one mapping per line, straight from a spreadsheet, a CSV export or typed by hand – choose where the rules will live, and the tool writes every rule in that platform's exact syntax.
It generates 301 permanent and 302 temporary redirects for Apache (.htaccess), Nginx, PHP, ASP and ASP.NET, plus JavaScript and HTML meta-refresh redirects for pages where server config is out of reach, and CSV/JSON exports for moving your mapping list between systems. It is useful when relaunching a site: visitors with old bookmarks land on the right page, search engines transfer the ranking signals of the original URL, and the 404 log stays quiet. Like every tool on this site, it runs entirely in your browser with JavaScript – your URL lists are never uploaded anywhere.