Michael Torbert

This plugin is great for someone needing to debug their own or another person’s WordPress site. It will collect and display and/or send debug information to an email address provided by the user. 
This is helpful for plugin or theme authors wanting to debug user’s sites.
Some features:
<ul>
<li>Displays system information</li>
<li>Emails system information</li>
</ul>
<h3>Arbitrary section</h3>
You may provide arbitrary sections, in the same format as the ones above. This may be of use for extremely complicated 
plugins where more information needs to be conveyed that doesn’t fit into the categories of “description” or 
“installation.” Arbitrary sections will be shown below the built-in sections outlined above.
<h3>A brief Markdown Example</h3>
Ordered list:
<ol>
<li>Some feature</li>
<li>Another feature</li>
<li>Something else about the plugin</li>
</ol>
Unordered list:
<ul>
<li>something</li>
<li>something else</li>
<li>third thing</li>
</ul>
Here’s a link to <a href="https://wordpress.org/" title="Your favorite software" rel="ugc">WordPress</a> and one to <a href="http://daringfireball.net/projects/markdown/syntax" title="Markdown is what the parser uses to process much of the readme file" rel="nofollow ugc">Markdown’s Syntax Documentation</a>. 
Titles are optional, naturally.
Markdown uses email style notation for blockquotes and I’ve been told:
<blockquote>
Asterisks for emphasis. Double it up for strong.
</blockquote>
<pre><code><?php code(); // goes in backticks ?>
</code></pre>

WordPress Debug

Displays and emails system information for debugging purposes for easy debugging of your own or a client/user site.

Lukman Nakib

A comprehensive debugging toolkit for WordPress developers and site administrators. This plugin gives you complete control over WordPress debugging without editing wp-config.php files or using FTP.
<h4>Quick Demo</h4>
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/D4K5zsLnILw?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
<h4>Key Features</h4>
<ul>
<li>WP-CLI Style Terminal: Execute WordPress commands directly from your browser with syntax highlighting and auto-completion</li>
<li>Database Tools: Run SQL queries, view table structures, and optimize your database (super admin only)</li>
<li>Debug Constants Manager: Toggle all WordPress debug constants with a single click</li>
<li>Log Viewer: View, filter, and analyze debug logs with syntax highlighting and error categorization</li>
<li>Query Inspector: Examine database queries with SAVEQUERIES support</li>
<li>Email Notifications: Get alerts when new errors appear in your logs</li>
<li>Safe Mode: Quickly disable all plugins except selected ones for troubleshooting</li>
<li>Custom Log Paths: Set custom log file locations with filter support</li>
</ul>
<h4>Debug Constants Available</h4>
<ul>
<li>WP_DEBUG – Default Value: true – Enables WordPress debug mode</li>
<li>WP_DEBUG_LOG – Default Value: true – Saves all errors to a debug.log file</li>
<li>SCRIPT_DEBUG – Default Value: false – Uses development versions of core JS and CSS files</li>
<li>WP_DEBUG_DISPLAY – Default Value: false – Controls whether debug messages display on screen</li>
<li>SAVEQUERIES – Default Value: false – Saves database queries for analysis</li>
</ul>
<h4>Developer Tools</h4>
<ul>
<li>Terminal Commands: Use WP-CLI style commands like <code>wp core version</code> or <code>wp plugin list</code></li>
<li>Database Explorer: Run SELECT queries and view results in a formatted table</li>
<li>Stack Trace Analysis: Visualize error stack traces for easier debugging</li>
<li>Hook Inspector: View all registered hooks and their callbacks</li>
<li>Environment Detection: Development features are automatically hidden in production</li>
</ul>
<blockquote>
Developer API: Apply custom filters like <code>apply_filters('wp_debuglog_log_file_path', $file);</code> to extend functionality
</blockquote>
Please note: Constant values will be restored on plugin deactivation as it was before activating the plugin.

Debug Log – Manager Tool

Awesome!

Helps us a lot with development :)


My go-to debugging plugin for 500 internal server errors and anything that's trickier to track. Good job.


Super useful


The plugin used to work very well, but with the latest update the debug log cannot be cleaned. This has been reported as a bug 2 months ago with no response and no other update. This is why I'm giving the plugin 2 stars. There are other plugins that work better.


Works but has bugs and bad support


Fantastic plugin with an easy interface for browsing. Thank you so much for making it available for free!


Fantastic & easy to use.

The "Debug Log Config Tool" simplifies debugging. Toggle logging,queries , view levels, clear logs from dashboard.

WordPress Debug vs Debug Log – Manager Tool