Which Plugin Broke Your Site?
Find Out in Seconds — Not Hours.

WP Health Inspector traces each error back to the issue that caused it, and shows you exactly which recent update, code change, or environmental change triggered it — all without touching a single row of your data.

Ten core diagnostic modules free, forever. Ten Pro-exclusive modules — including Root Cause Analysis, Pre-Update Impact Analysis, and Plugin Conflict Detection, as well as additional functionality added to select free modules. — unlock when you're ready to go deeper. One health score. Zero risk.

  100% read-only  ·    No data sent anywhere  ·    WordPress.org listed

Your Site Is Quietly Accumulating Problems.
Most Developers Find Out Too Late.

PHP errors pile up unread. Plugin updates break things with no obvious connection. Autoloaded options silently bloat. Cron jobs fail in the dark. Every day without visibility is a day the problems get harder to untangle — until a client calls and the emergency clock starts.

Your WordPress Site's Health — At a Glance

These modules are free forever in the WPHI Diagnostic Suite Lite plugin on WordPress.org.

Click any module to see full details

Ten Free Diagnostic Modules — Included in the Free Lite Version

No Account. No Trial. No Credit Card. No Expiry.

These modules are free forever in the WPHI Diagnostic Suite Lite plugin on WordPress.org.

Click any module to see full details

Ready for Deeper Answers?

The Free Version Tells You Something Is Wrong.
Pro Tells You Exactly Why — and Which Plugin.

Root Cause Analysis cross-correlates findings from every module and names the responsible plugin — with the WP-CLI command and a one-click deactivation link. Conflict Detector shows which plugins are fighting over the same hooks. Pre-Update Impact Analysis gives every pending update a 0–100 Blast Radius Score before you touch anything.

View Pro Pricing — From $49.99/yr Try the Live Demo First

Ten Pro-Exclusive Modules: Root Cause, Conflict Detection, Pre-Update Impact & More

Unlock the full diagnostic suite — starting at $49.99/year

All Pro plans include every module. The only difference between plans is the number of sites. Compare Lite vs Pro →

Click any module to see full details

  Try a Live Interactive Demo — No Install Required

Who WP Health Inspector Is For

Why Agencies Install This on Every Client Site

Most WordPress Problems Don't Happen Overnight

  • Plugin updates introduce hidden breakage
  • Database bloat slows every page load
  • Cron jobs silently fail
  • Server and configuration issues go unnoticed
  • Security risks accumulate until they're exploited

These aren't edge cases. None of this is unusual. Through active monitoring, ALL of it is preventable.

Get Answers Quickly, and Safely Without Risk

  • Immediate answers
  • 100% read-only
  • No automatic changes
  • Production-safe
  • No personal data access

Fixing problems you don't understand is risky. This plugin makes those risks visible.

Sites That Run Smoothly Aren't Lucky.
They're Monitored.

Right now, your site is almost certainly throwing PHP errors nobody is reading. A plugin updated last week may be the cause — but without error log correlation, you'll never connect those dots. A single bloated autoload table adds hundreds of milliseconds to every page load. A failing cron job queues silently and spikes on the next visitor. A conflict between two plugins makes both unreliable in ways that are impossible to reproduce consistently.

The difference between a five-minute fix and a weekend emergency is knowing the problem exists, knowing which plugin caused it, and knowing what changed.

WP Health Inspector gives you that knowledge — without the risk of touching anything.

Common Questions

Is WP Health Inspector safe to use on live sites?

Yes — 100% read-only. Every query is SELECT, SHOW, or SHOW INDEX. The plugin never writes, updates, or deletes anything. No cleanup routines, no auto-fixes, no risk. It was designed from the ground up to be safe on live production sites — because that's where you need it most.

What's the difference between the free Lite version and Pro?

The free Lite version includes ten core modules: Error Log Viewer, What Changed? Timeline, DB Health Inspector, Autoload Governor, Blast Radius Analyzer, Asset Inspector, Cron Inspector, Time Bomb Detector, Server & PHP Environment, and Health Score Dashboard. Pro adds ten additional modules including Root Cause Analysis, Plugin Conflict Detector, Pre-Update Impact Analysis, Request Profiler, External Dependency Monitor, Risk Indicators, Performance Baselines, Core Web Vitals Estimation, Security Audit, Content Health, and full Export Report. It also upgrades several Lite modules to their full versions. Full comparison here →

How does it know which plugin caused an error?

The plugin uses file-path matching as the primary attribution signal: if a PHP error originates inside an updated plugin's folder, the correlation is scored 80–99 out of 100 (near-certain attribution). It also tracks every plugin update, activation, and WordPress core update as a timestamped event and correlates them against error frequency spikes on the What Changed? timeline.

Do I need an account to use the free Lite version?

No. Install it from WordPress.org, activate it, and it works immediately. No account, no email signup, no trial period, no nag screens, no data sent anywhere. The Lite version is free forever.

Does it work with WooCommerce sites?

Yes. Several modules are particularly useful on WooCommerce sites: Cron Inspector surfaces overdue Action Scheduler jobs (a common cause of order processing delays), Error Log Viewer identifies WooCommerce-specific PHP errors with tailored fix steps, and Pre-Update Impact Analysis (Pro) scores WooCommerce and payment gateway updates with a Blast Radius Score before you touch them.

What Pro plan should I choose?

Starter ($49.99/yr) gives you the full Pro suite on a single site — ideal for testing or a personal project. Studio ($199.99/yr) covers up to 5 sites, which suits most freelancers. Growth ($699.99/yr) covers up to 25 sites. Agency ($1,299.99/yr) is unlimited. Every plan includes all nineteen diagnostic modules. See full pricing →

  Try a Live Interactive Demo — No Install Required

Know What's Wrong. Know What Changed. Know Which Plugin.
Stop Guessing — Start Diagnosing.

Get the Full Pro Plugin

Root Cause Analysis names the responsible plugin, gives you the WP-CLI command, and shows a deactivation link — all in one view.

Pre-Update Impact Analysis scores every pending update with a 0–100 Blast Radius Score before you click anything.

All nineteen modules. Every plan. No feature tiers. The only difference is the number of sites.

Get Pro Now

Try the Free Lite Version

Install, scan safely, and see what your WordPress site has been quietly accumulating — including errors you didn't know existed.

Includes the full Error Log & Error Map, What Changed? timeline, Blast Radius Analyzer, Autoload Governor, and more — free, forever.

No account. No trial. No nag screens. No data sent anywhere.

Download Lite — Free