Automattic

Daniel Bachhuber

Gary Jones

Tim Moore

A simple WordPress admin tool for inspecting rewrite rules. View a listing of all your rewrite rules, see which rewrite rules match a given URL (and the priorities they match in), or filter by different sources of rewrite rules. Perform a soft flush of your rewrite rules to regenerate them.
<a href="https://github.com/Automattic/Rewrite-Rules-Inspector/" rel="nofollow ugc">Developed on GitHub</a> — pull requests are always welcome. Please leave feedback, questions, bug reports, and feature requests in the GitHub issues.
<h3>Where to find it</h3>
Go to <code>Tools → Rewrite Rules</code> in the WordPress admin.
<h3>URL Tester</h3>
Quickly test any URL (or path) against your site’s rewrite rules:
<ul>
<li>See whether the URL would be a 404 or which rule would match first (the one WordPress uses).</li>
<li>View the list of all matching rules, in match priority order.</li>
<li>Inspect the query variables extracted from the match and the resulting final query WordPress would run.</li>
</ul>
Works with full URLs or paths and automatically handles sites installed in a subdirectory.
<h3>Permastructs</h3>
Browse a table of all permastructs that WordPress is aware of, including:
<ul>
<li>Name — the permastruct key (e.g. for posts, taxonomies, authors).</li>
<li>Structure — the permalink structure pattern used to generate rules.</li>
<li>Description — a human-friendly summary of what the permastruct controls.</li>
</ul>

Rewrite Rules Inspector

Best option when working with permalinks and custom urls structs

A must have for permalinks work

Easy Testing what wordpress rewrite thinks about any url ;) 

Nice one!


Sometimes you get into a trap that logically leads nowhere and this plugin can help you find a way out of this vicious circle. Thanks.


Genius tool for debugging redirect errors

A simple admin tool for inspecting rewrite rules.

Kerfred

Displays the current rewrite rules for the site. Requires the debug bar plugin.

Debug Bar Rewrite Rules

Displays the current rewrite rules for the site. Requires the debug bar plugin.

Rewrite Rules Inspector vs Debug Bar Rewrite Rules