301 Redirects helps you manage and create 301, 302, 307 redirects for your WordPress site to improve SEO and visitor experience. With a user-friendly interface, 301 Redirects is easy to use. Perfect for new sites or repairing links after reorganizing your existing WordPress content, or when your site has content that expires and you wish to avoid sending visitors to a 404 error page. Use the 404 error log to identify problematic links and make redirection easy.
301 Redirects GUI is located in WP Admin – Settings – 301 Redirects
404 Error Log widget can be found in the WP Admin – Dashboard