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I created this post as a research file for myself and anyone looking for effective WordPress debugging plugins. Whether you’re a developer or a site administrator, the right tools can make troubleshooting and maintaining your WordPress site much easier. Below, I’ve compiled notes and summaries on some of the most useful plugins available for real-time monitoring, debugging, and site health checks.
Let me know if you’d like me to expand this introduction or help organize the rest of your research notes!
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1 0 Day Analytics By Golemiq
0 Day Analytics is a WordPress plugin that helps developers and site admins monitor and debug their sites in real time. It shows PHP errors, scheduled tasks, database status, outgoing emails, HTTP requests, hook activity, and site health—all in one place.
Unlike other monitoring tools, 0 Day Analytics runs entirely within your WordPress site and does not send data to third parties. All features are optional and built for performance.
Plugin Link: https://wordpress.org/plugins/0-day-analytics/Opens in a new window [1]
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2 Display Environment Type By Stoil Dobreff
WordPress 5.5 lets you set different environment types (like development, staging, or production). This plugin shows your site’s environment type in the admin bar and on the dashboard.
For more control, such as setting the environment from the WordPress admin (if wp-config.php is writable), try the author's other plugin, 0 Day Analytics.
Recommended Plugin:
0 Day AnalyticsOpens in a new window [1] – It gives detailed insights into errors and how your site is running. It also includes tools to manage Cron jobs, transients, the database, code snippets, emails, and plugin versions. -
3 Add Custom Header Images By Andy Fragen
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4 Add Custom Codes – Insert Header, Footer, Custom PHP Snippets, CSS, Javascript By SaifuMak
Easily add custom code to your WordPress site. You can insert PHP, HTML, CSS, JavaScript, Google Analytics, Search Console tags, or other code snippets as needed.
Plugin Link: https://wordpress.org/plugins/add-custom-codes/Opens in a new window [4]
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5 WP Add Custom CSS and JS By D3 LOGICS
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6 Simple Custom CSS and JS By SilkyPress
Easily customize your WordPress site by adding custom CSS and JS code without editing theme or plugin files. Perfect for making quick design changes.
Plugin Link: https://en-ca.wordpress.org/plugins/custom-css-js/Opens in a new window [6]
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7 Simple Maintenance Redirect By PluginRx
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8 Advanced Redirect Manager 301 By NewCodeByte
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9 Advanced REST API DevTools By Tejas Gajjar
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10 Variable Inspector By Bowo
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