michaeltyson

Leon Stafford

Save your visitors from unhelpful 404 errors!
Instead of quickly giving up when a visitor reaches content that doesn’t exist, make an effort to guess what they were 
after in the first place. This plugin will perform a search of your posts, pages, tags and categories, using keywords from the requested 
URL. If there’s a match, redirect to that content instead of showing the error. If there’s more than one match, the 
404 template can use some template tags to provide a list of suggestions to the visitor.
See the <a href="http://michael.tyson.id.au/smart-404" rel="nofollow ugc">Smart 404 homepage</a> for more information.
<h3>Template tags</h3>
<code>smart404_has_suggestions</code>
Returns true if there are some suggestions, false otherwise
<code>smart404_get_suggestions</code>
Retrieve an array of post objects for rendering manually.
<code>smart404_suggestions</code>
Draw a list of suggested posts.
Pass the parameter “list” to render suggestions as a list.
<code>smart404_loop</code>
Query posts for use in a Loop. Eg:
<pre><code><?php smart404_loop(); ?>
<?php while (have_posts()) : the_post(); ?>
 <h2><a href="<?php the_permalink() ?>"><?php the_title(); ?></a></h2>
 <?php the_excerpt(); ?>
<?php endwhile; ?>
</code></pre>
Note that the loop will not display pages correctly, as it is not built to support them. It is recommended that if you use 
a loop like that above, do not enable searching of pages.
<code>smart404_get_search_terms</code>
Retrieve an array of search terms used to populate the suggestions list, for use with contextual highlighting, etc.
For support and latest source code, please visit https://github.com/leonstafford/smart-404

Smart 404

Automatically redirect to the content the user was most likely after, or show suggestions, instead of showing an unhelpful 404 error.

devshujon

LinkRail Redirects, 404 & Security is a fast, lightweight all-in-one URL redirect, broken-link repair and admin-URL security plugin for WordPress. Built for sites that need real redirect power, real login hardening, and real 404 recovery — without the bloat.
<h4>Why LinkRail?</h4>
Most redirect plugins do one thing. LinkRail bundles three things every serious WordPress site actually needs:
<ol>
<li>Redirect Manager — 301, 302, 307, 308, and 410 Gone redirects with exact, prefix, regex, and wildcard matching.</li>
<li>Admin URL Security — hide your <code>/wp-login.php</code> behind a custom slug, IP-whitelist <code>/wp-admin</code>, and recover with a one-time emergency URL if you ever lock yourself out.</li>
<li>SEO 404 Broken Link Fixer — auto-detects 404s across your site and suggests or one-click creates redirects to recover lost traffic.</li>
</ol>
All features are 100% free. No license keys, no upsells, no feature gating.
<h4>Core Features</h4>
<ul>
<li>Unlimited redirects (301, 302, 307, 308, 410 Gone)</li>
<li>Match types: exact, prefix, regex (with capture groups), wildcard</li>
<li>Hide wp-login behind a custom slug with IP whitelist and emergency recovery URL</li>
<li>Automatic 404 broken link detection and smart redirect suggestions</li>
<li>Full visit logs per redirect with hit counters</li>
<li>CSV import/export for redirects</li>
<li>JSON import/export for plugin settings (each module saved independently)</li>
<li>Clean, native-feeling admin UI</li>
<li>Translation-ready (text domain: <code>linkrail</code>)</li>
<li>No external services — everything runs locally</li>
</ul>
<h4>Built for Performance</h4>
<ul>
<li>Cached lookups via WordPress object cache</li>
<li>Indexed database tables for sub-millisecond matching</li>
<li>Runs on <code>template_redirect</code> — no interference with other plugins</li>
<li>Zero frontend JS, zero frontend CSS</li>
</ul>
<h4>Privacy</h4>
LinkRail stores redirect rules, visit hit counts, and 404 log entries in your own WordPress database. Nothing is sent to external servers. Bot user-agents are ignored by default to keep logs clean.

LinkRail Redirects, 404 & Security

All-in-one redirect manager, broken-link repair and admin URL security for WordPress. 301/302/307/308/410, regex, hidden /wp-login, IP whitelist, emer …

Smart 404 vs LinkRail Redirects, 404 & Security