Edit the debugging constants from wp-config, view the log file on the Dashboard and more debugging features.
As of April 2026, WP Marvelous Debug is a WordPress log plugin with 20 active installations and a 0/5 rating0. It has been downloaded 1.3K+ times in total. Requires WordPress 4.4+ and PHP 7.0.0+. Available on WordPress.org since 2020. Last updated 6 years ago — may have compatibility concerns. Top alternative: Check & Log Email – Easy Email Testing….
This plugin allows viewing the log file (debug.log) on the Dashboard and editing the debugging constants from wp-config.php. It also provides other debugging oriented features.
The log file is loaded on the Dashboard (Tools > Log File) using the /SplFileObject class, optimized for memory usage, and it will use a pagination in order to load only some lines from it.
The plugin will try to enable WP_DEBUG and WP_DEBUG_LOG to true and disable WP_DEBUG_DISPLAY on its first run and will try to do the opposite when it’s deactivated.
You can change this behaviour if you want in the settings.
The wp-config.php is being edited using wp-cli/wp-config-transformer library, and these are the edited constants:
WP_DEBUGWP_DEBUG_LOGWP_DEBUG_DISPLAYSCRIPT_DEBUGSAVEQUERIES| WordPress | 4.4+ requiredTested up to 5.3.21 |
| PHP | 7.0.0+ required |
WPConfigTransformer classPlugin data sourced from WordPress.org. Analysis and metrics by PluginSift.