WP Health Inspector traces WordPress errors to the plugin update that caused them. Free Lite version plus paid Pro plans for agencies.
WP Health Inspector is a diagnostic and troubleshooting plugin for WordPress sites, built to help developers, agencies, and site owners quickly identify what broke a site and why. It operates in read-only mode, scanning the PHP error log, database, cron jobs, and WordPress environment to correlate errors with the plugin updates or configuration changes that likely caused them. The free Lite version, distributed via WordPress.org, ships with 13 diagnostic modules including an Error Log & Error Map, a "What Changed?" timeline that links errors to recent plugin updates, an Autoload Governor for database bloat, a Database Health Inspector, a Cron Inspector, a Time Bomb Detector for SSL/PHP end-of-life warnings, an Asset Inspector, server/PHP environment profiling, a Plugin Abandonment Radar, and a Mail Health Inspector with SPF/DKIM/DNS checks. The paid Pro version adds root cause analysis, pre-update "blast radius" impact scoring, a conflict detector for hooks and assets, a request profiler, external dependency monitoring, performance baselines, Core Web Vitals estimation, and a security audit module, for 23 modules total. Pro plans are licensed by number of managed sites, from a single-site Starter plan up to an unlimited-site Agency plan, making it a fit for freelancers and WordPress agencies as well as individual site owners. It requires WordPress 6.0+ and PHP 8.0+ and is designed to run alongside common caching and security plugins.