FallbackRedirect

FallbackRedirect keeps old URLs working after you rename pages, move a site, or delete content. It stores redirect rules, serves 301 / 302 / 307 responses on the front end, and logs unique 404s so you can turn the worst broken links into redirects.

Under Settings → FallbackRedirect you get six tabs:

• Overview — open 404s, redirect hits, a 14-day chart, and the top broken links
• Redirects — add, edit, disable, or delete rules (exact, prefix, wildcard, or regex)
• 404s — grouped broken links with hit counts, last referrer, one-click repair, ignore, and CSV export
• Migration — CSV import/export and automatic 301s when a published permalink changes
• Settings — engine, monitor, privacy, retention, and uninstall cleanup
• About — plugin info and version

How SEO protection works:

• Front-end matching runs on template_redirect before the theme 404 template
• Exact rules are looked up by hash; prefix, wildcard, and regex rules are checked next
• Changing a published post or page permalink can auto-create a 301 from the old path
• Looping rules (same source and destination on this site) are rejected
• Admin, login, and cron paths cannot be used as sources
• 404s ignore bots, logged-in users, static file extensions, .php probes, and wp-includes / plugin / theme scans by default
• IP addresses are stored as a salted hash, not in the clear