Glimbyte

Stop editing wp-config.php every time you need to debug your WordPress site.
Developer Debug Mode lets you toggle all WordPress debug constants directly from your dashboard with beautiful toggle switches. Changes save automatically — no clicking save buttons, no FTP access needed, no risk of syntax errors in your config file.
<h4>🎯 The Problem This Plugin Solves</h4>
Every WordPress developer knows the pain:
<ol>
<li>Something breaks on your site</li>
<li>You need to enable WP_DEBUG to see the error</li>
<li>You open FTP/File Manager, find wp-config.php, edit it carefully</li>
<li>Debug the issue</li>
<li>Remember to turn debug off before visitors see ugly error messages</li>
<li>Repeat next time something breaks</li>
</ol>
Developer Debug Mode eliminates steps 2-5 entirely. Toggle debug on, find the error, toggle off. Done in seconds.
<h4>✨ Key Features</h4>
One-Click Debug Toggles 
Control all six WordPress debug constants from a clean, modern interface:
<ul>
<li>WP_DEBUG — Master switch for WordPress debugging</li>
<li>WP_DEBUG_LOG — Save errors to wp-content/debug.log</li>
<li>WP_DEBUG_DISPLAY — Show errors on screen (careful on production!)</li>
<li>SCRIPT_DEBUG — Use unminified core CSS/JS files</li>
<li>SAVEQUERIES — Log database queries for performance analysis</li>
<li>WP_DISABLE_FATAL_ERROR_HANDLER — See raw PHP fatal errors instead of recovery mode</li>
</ul>
Admin Bar Quick Toggle (New in 1.2.0!) 
Toggle any debug constant directly from the WordPress admin bar — no need to visit the settings page. Perfect for quick debugging sessions.
Built-in Debug Log Viewer 
View, search, download, and clear your debug.log without leaving WordPress:
<ul>
<li>Color-coded entries (fatal, error, warning, notice)</li>
<li>Search with highlighting</li>
<li>Auto-refresh option for real-time monitoring</li>
<li>One-click download and clear</li>
</ul>
Auto-Save Technology 
Changes save instantly as you toggle. No save button, no page refresh, no waiting.
Frontend Debug Warning 
A tasteful notification bar appears when WP_DEBUG_DISPLAY is active, reminding you to turn it off before visitors see error messages.
Cross-Tab Synchronization 
Toggle debug in one browser tab and watch other open tabs update instantly.
Automatic Backups 
Every change creates a backup of wp-config.php. The plugin keeps the 5 most recent backups, so you can always recover if something goes wrong.
<h4>🔧 Perfect For</h4>
<ul>
<li>Theme developers debugging template issues</li>
<li>Plugin developers testing new code</li>
<li>Site administrators troubleshooting problems</li>
<li>Agencies managing multiple client sites</li>
<li>Freelancers who need quick debugging without FTP access</li>
<li>Anyone tired of manually editing wp-config.php</li>
</ul>
<h4>💡 Why Choose Developer Debug Mode?</h4>
Unlike other debug plugins, we focus on user experience:
✅ Instant toggles — No save buttons, changes apply immediately 
✅ Visual feedback — Clear status indicators show exactly what’s enabled 
✅ Admin bar access — Toggle debug from anywhere in WordPress 
✅ Production-safe — Frontend warnings prevent accidentally exposing errors 
✅ Modern design — Beautiful UI that fits naturally in your dashboard 
✅ Lightweight — No bloat, loads only where needed
<h4>🔒 Built With Security In Mind</h4>
<ul>
<li>Capability checks ensure only administrators can change settings</li>
<li>Nonce verification on all AJAX requests</li>
<li>Automatic wp-config.php backups before every change</li>
<li>No data sent to external servers</li>
<li>Clean uninstall removes all plugin data</li>
</ul>
<h4>📚 Debug Constants Explained</h4>
Not sure what each constant does? Here’s a quick guide:
WP_DEBUG 
The master switch. When enabled, WordPress will display PHP errors, notices, and warnings. Required for the other debug constants to work.
WP_DEBUG_LOG 
Saves all debug messages to <code>/wp-content/debug.log</code>. Essential for debugging issues that happen in the background (AJAX, cron jobs, REST API).
WP_DEBUG_DISPLAY 
Shows errors directly on your web pages. Useful during development but never enable on production — it can expose sensitive information to visitors.
SCRIPT_DEBUG 
Forces WordPress to use the development versions of core CSS and JavaScript files instead of minified versions. Helpful when debugging scripts.
SAVEQUERIES 
Stores database queries in a global array for later analysis. Useful for identifying slow queries but adds overhead — disable when not needed.
WP_DISABLE_FATAL_ERROR_HANDLER 
Disables WordPress’s “recovery mode” so you see the actual PHP fatal error instead of “There has been a critical error on this website.”
<h4>🤝 Support & Documentation</h4>
Need help? We offer:
<ul>
<li>Free Support — Post in the <a href="https://wordpress.org/support/plugin/developer-debug-mode/" rel="ugc">WordPress.org support forum</a></li>
<li>Documentation — Visit <a href="https://glimbyte.ie" rel="nofollow ugc">glimbyte.ie</a> for guides and tutorials</li>
<li>Express Support — Fast turnaround for urgent issues via <a href="https://glimbyte.ie/support" rel="nofollow ugc">glimbyte.ie/support</a></li>
</ul>
<h4>🌐 Works Great With</h4>
<ul>
<li>Query Monitor — Use alongside for deeper debugging</li>
<li>Debug Bar — Compatible with Debug Bar and its add-ons</li>
<li>Any caching plugin — Clear cache after toggling debug constants</li>
<li>Managed WordPress hosts — Works on most hosts including Kinsta, WP Engine, SiteGround</li>
</ul>
<h3>Credits</h3>
Developed with ❤️ by <a href="https://glimbyte.ie" rel="nofollow ugc">Glimbyte</a> — WordPress Development & Support.
Special thanks to the WordPress community for feedback and suggestions.
<h3>Privacy Policy</h3>
Developer Debug Mode does not collect, store, or transmit any personal data. All settings are stored locally in your WordPress database and wp-config.php file.
The optional support contact form (available in the plugin settings) sends data directly to Glimbyte’s support team. This data is handled according to <a href="https://glimbyte.ie/privacy" rel="nofollow ugc">Glimbyte’s Privacy Policy</a>.
<h3>Additional Info</h3>
<h4>Contribute</h4>
Found a bug or have a feature request? We’d love to hear from you!
<ul>
<li>Support Forum: <a href="https://wordpress.org/support/plugin/developer-debug-mode/" rel="ugc">wordpress.org/support/plugin/developer-debug-mode</a></li>
<li>Website: <a href="https://glimbyte.ie" rel="nofollow ugc">glimbyte.ie</a></li>
</ul>
<h4>Translations</h4>
Want to help translate Developer Debug Mode into your language? Visit <a href="https://translate.wordpress.org/projects/wp-plugins/developer-debug-mode/" rel="nofollow ugc">translate.wordpress.org</a> to contribute.

Developer Debug Mode


Well-designed plugin! Minimalist UI, perhaps a bit dated, but performs its task very well.


Amazing

Toggle WordPress debug mode instantly. No wp-config.php editing needed. Features auto-save, admin bar quick toggle, and debug log viewer.

Yevhen Leonidov

Working with <code>WP_DEBUG</code> enabled often floods the screen with notices and deprecation warnings from third-party plugins and themes – things you neither wrote nor can fix. GLOBUS Debug Control lets you filter out the noise and focus on what actually matters.
All settings are available in Settings – GLOBUS Debug Control. The plugin provides eight tabs: Settings, WP_DEBUG, Error Log, Cron Tasks, Transients, Autoloaded, HTTP Log, and Constants. No code editing needed.
<h4>Settings tab</h4>
Choose which errors to see
Turn off specific PHP error types independently:
<ul>
<li>Notices – informational messages that rarely indicate a real problem</li>
<li>Deprecated – warnings about outdated functions, usually from third-party code</li>
<li>Warnings – optional, keep them on if you are actively debugging</li>
<li>Strict – PHP 7 strict standards messages (not applicable in PHP 8+)</li>
</ul>
Control error display
Three modes for showing errors on screen:
<ul>
<li>Inherit – follows your <code>wp-config.php</code> settings (default, non-intrusive)</li>
<li>On – always show errors, useful during active development</li>
<li>Off – hide all errors from screen even if <code>WP_DEBUG_DISPLAY</code> is on</li>
</ul>
Errors are always hidden automatically during AJAX requests, REST API calls, WP-Cron, and WP-CLI, so your API responses stay clean regardless of the display setting.
Error logging
Enable logging to capture errors in a file instead of (or in addition to) showing them on screen:
<ul>
<li>Set a custom log file path (absolute or relative to <code>wp-content/</code>)</li>
<li>Set a maximum log file size (1-100 MB); the file rotates automatically when the limit is reached</li>
<li>Defaults to <code>wp-content/debug.log</code> if no path is specified</li>
</ul>
Remove the php-error CSS class
When WordPress encounters a PHP error, it adds a <code>php-error</code> class to the <code><body></code> tag, which can break your page layout. This option removes it via both CSS and JavaScript so your front-end and admin look normal even in debug mode.
Early error interception (optional)
WordPress loads plugins in alphabetical order. If another plugin throws an error before GLOBUS Debug Control initialises, those errors will not be filtered. Enabling the MU-plugin dropin installs a small helper file into <code>wp-content/mu-plugins/</code> that runs before any regular plugin, ensuring your filter settings apply from the very start of the request. The dropin is removed automatically when the plugin is deactivated or uninstalled.
<h4>WP_DEBUG tab</h4>
Toggle the five most important debug constants directly from the admin panel without editing <code>wp-config.php</code>:
<ul>
<li><code>WP_DEBUG</code> – master debug switch</li>
<li><code>WP_DEBUG_LOG</code> – write errors to a log file</li>
<li><code>WP_DEBUG_DISPLAY</code> – show errors on screen</li>
<li><code>SCRIPT_DEBUG</code> – use unminified core JS/CSS</li>
<li><code>SAVEQUERIES</code> – log all database queries</li>
</ul>
The plugin locates your <code>wp-config.php</code> automatically and patches it in place, adding the constant if it is missing or updating the existing value. Commented-out defines and block-comment sections are never touched. The current status of <code>WP_DEBUG</code> is always visible as a badge in the plugin header.
<h4>Error Log tab</h4>
Displays the contents of your <code>debug.log</code> file directly in the admin panel using a CodeMirror editor with line numbers. Lines are color-coded by severity: fatal/parse errors, warnings, notices/deprecations, and cron-related messages. The log is paginated (200 lines per page), supports live polling for new entries, and can be downloaded or cleared with one click. Large log files (over 2 MB) are read from the tail to keep memory usage low.
<h4>Cron Tasks tab</h4>
Lists all scheduled WordPress cron events with hook name, next run time, recurrence interval, and arguments. Summary cards show total events, overdue count, orphaned hooks, and duplicates. Overdue events are highlighted. You can run any event immediately or delete orphaned hooks directly from the table.
<h4>Transients tab</h4>
Displays database-stored WordPress transients from the options table with key name, data size, and expiration time. Transients stored in an external object cache (Redis, Memcached) are not shown. Expired transients are highlighted. You can delete individual transients or purge all expired ones in one click. Summary cards show total count, expired count, and total data size.
<h4>Autoloaded tab</h4>
Lists autoloaded options from <code>wp_options</code> sorted by data size (top 200). Shows the option name and value size. Summary cards display total autoloaded row count and total payload size with warnings when thresholds are exceeded (over 800 KB or over 100 rows). This is a read-only diagnostic view to help identify options that inflate every WordPress request.
<h4>HTTP Log tab</h4>
Captures outgoing WordPress HTTP API requests (<code>wp_remote_get</code>, <code>wp_remote_post</code>, etc.) via the <code>http_api_debug</code> hook. Capturing must be explicitly enabled and stores up to 100 entries (6-hour TTL). Each entry shows the request URL, HTTP method, status code, response time, and transport class. Useful for spotting slow or failing external API calls.
<h4>Constants tab</h4>
Displays all WordPress-related PHP constants defined at runtime, grouped by category: Debug, Performance, Security, Database, Auth and Salts, Paths, and Other WP_* constants. Sensitive values (database password, auth keys, salts) are automatically masked. This is a read-only reference view.

GLOBUS Debug Control

WordPress debug toolkit: filter errors, toggle WP_DEBUG, view error logs, monitor cron, transients, HTTP requests, and more.

Developer Debug Mode vs GLOBUS Debug Control