404 Resolver

Search engines and AI crawlers keep requesting URLs of deleted posts, tags and authors. 404 Resolver reads the 404 log of the Redirection plugin once a day, keeps only hits of known bots (Googlebot, bingbot, GPTBot, ClaudeBot, PerplexityBot and others — editable) and decides for every content-like URL:

• 301 to the live post, page, tag, category or author with the same slug;
• 410 Gone when nothing with that slug exists any more;
• needs review when a post with that slug is a draft, scheduled, private or in the trash — nothing is changed automatically.

It also heals itself: an old 410 rule is switched off when the content comes back.

• Report-only mode by default: every run is logged with the full list of decisions; turn auto-apply on when you trust the results.
• Rules are added to Redirection (group 1) with «ignore trailing slash», never duplicated.
• Run history and details on the plugin page under «MCG Plugins → 404 Resolver».
• Works with any permalink structure: tag, category and author bases are read from the site settings; a live counterpart is searched among all public post types (posts, pages, WooCommerce products…).
• «Site sections» setting: handle only URLs that start with the listed sections (plus dates, tags, categories, authors); empty — every path of up to 4 segments.

Requires the Redirection plugin with 404 logging enabled.

1.4.1 (2026-10-15)

• The «MCG Plugins» menu is now at the top of the admin menu, right under the Dashboard.

1.4.0 (2026-10-15)

• Fake bots are filtered out: with SearchPulse active and Redirection storing full IP addresses, every 404 request is checked against the official IP ranges of Google, Bing and AI bots; URLs requested only by fake «Googlebots» (vulnerability scanners) no longer create 410 / 301 rules. The dashboard shows the check mode and how many URLs were skipped.

1.3.1 (2026-10-15)

• Technical post types of page builders and themes (Elementor templates and floating buttons, Penci and 8theme blocks, WordPress block templates) are no longer used as redirect targets. The option k404r_post_types sets the list for a site; the filter k404r_excluded_post_types changes the exclusions.