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.

welaika

<a href="https://github.com/welaika/wordless" rel="nofollow ugc">Wordless</a> is the WP themes framework developed and used by <a href="http://dev.welaika.com" rel="nofollow ugc">weLaika</a>.
As we wrote in the Wordless README:
<pre><code>« Wordless is not meant to be a bloated, all-included tool.
This is why we recommend adding some other plugins
to get the most out of your beautiful WP developer life »
</code></pre>
Wordless Extender (WLE from now on) is a starting point for every Wordless theme. 
Let’s take a look in depth.
<h3>Plugin Manager</h3>
Never change a winning team! These are our starred plugins; with these we cover the 90% of our developing needs. 
You’ll have a control panel inside WLE to list, enable, disable and upgrade plugins from the collection; never search that useful plugin crawling the WP.org repo and have team kickstart projects with always the same plugin set.
<h3>Config Constants</h3>
Manage WP constants (stored in your wp-config.php) directly within the WP backend.
We got inspired by WordPress <a href="https://codex.wordpress.org/Editing_wp-config.php" rel="nofollow ugc">guidelines</a> and we crafted this little control panel. It is intended for advanced users: we are not interested in making things easy, but we’d like to remember important/complex/abstruse settings and have them always just one click away.
Everytime you’ll update these configs <code>wp-config.php</code> file will be backed-up in <code>wp-config.php.orig</code>. Keep in mind.
<h3>Security fixes</h3>
This is the most important section: improving security. 
Most of the tricks are directly from <a href="https://codex.wordpress.org/Hardening_WordPress" rel="nofollow ugc">Hardening WordPress</a> guide; others are tricks discovered on battlefield.
You have to know what you are doing. Follow the comments in the panel if you are confused. Remind that when you’ll let the plugin rewrite your <code>.htaccess</code> file, it will take a backup copy of the last version in <code>.htaccess.orig</code>.
If you are asking about the things are we doing with your <code>.htaccess</code> go read the template in <code>resources/htaccess.tpl</code>. 
Essentially we’ll block access to various files and locations. 
We are always at work to improve this section, so if you have some tips open an issue or send a pull request.
<h3>Wordless integration</h3>
WLE menu in the WP backend, will be integrated with the Wordless 0.4+ backend menu, creating one place to rule them all!
<h3>Need more tools?</h3>
Visit <a href="http://wptools.it" rel="nofollow ugc">WordPress Tools</a>.
<h3>Licence</h3>
(The MIT License)
Copyright © 2014-2015 weLaika
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ‘Software’), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED ‘AS IS’, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Wordless Extender

Wordless Extender is a starting point for everyone: list of commonly used plugins, wp-config.php / .htaccess configuration and security improvements.

Developer Debug Mode vs Wordless Extender