WPHI Diagnostic Suite Lite

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Most WordPress performance problems don’t announce themselves. Database
bloat accumulates silently. Cron jobs fail without warning. PHP errors
repeat thousands of times in a log nobody checks. SSL certificates expire
unnoticed. By the time something visibly breaks, the damage is already done.

WPHI Diagnostic Suite Lite is the free WordPress diagnostic plugin that
shows you exactly what’s wrong — before it becomes a crisis.

It’s the free version of WP Health Inspector,
a complete WordPress health check tool used by developers and agencies to
surface hidden performance issues, database problems, security risks, and
server misconfigurations — without touching a single row of your data.

What You Can Find and Fix

Is database bloat slowing down every page load?
The DB Health Inspector surfaces every table exceeding 50 MB, ranks your
autoloaded options by size with color-coded severity, and reports orphaned
postmeta left behind by plugins you removed years ago. Autoload bloat adds
overhead to every single page request — this module shows you exactly what’s
responsible.

Are your plugins quietly expanding your database?
The Blast Radius Analyzer maps every custom database table and background
cron job that third-party plugins and themes have added to your site. Know
which plugins have the deepest footprint — and which ones would be the
messiest to remove.

Are your scripts and stylesheets killing page speed?
The Asset Inspector audits every JavaScript and CSS file WordPress loads,
with individual file sizes and running totals. If a plugin is loading a
400KB script on every page, this is where you find it.

Is your cron system running — or just pretending to?
The Cron Inspector surfaces every scheduled background task including Action
Scheduler jobs, sorted by next run time. Stacking, overlapping, or silently
failing cron jobs show up here immediately.

Are PHP errors quietly degrading your site?
The Error Log Viewer parses your PHP error log and groups repeated errors by
type and frequency — ranked, severity-rated, and ready to act on. It also
flags whether your error log is publicly accessible, a security risk most
sites don’t know they have.

Is your SSL certificate about to expire?
The Time Bomb Detector checks your SSL expiry date and alerts you before it
becomes a browser security warning your visitors see first.

Are your PHP and server settings limiting performance?
The Server & PHP Environment module shows memory limits, execution time,
upload limits, and OPcache status — the configuration details that quietly
cap what your site can do.

Your Site’s Health — In a Single Score

Every module feeds into an animated 0–100 Health Score Dashboard that grades
your site across its most impactful performance and safety dimensions. Open
it and know in seconds whether your site needs attention — and exactly where
to look first.

100% Read-Only. Safe on Any Live Site.

Every query this plugin runs is SELECT-only. It never writes, updates,
deletes, or modifies anything. No cleanup, no automation, no surprises.
Designed specifically to be safe on live production sites.

Free. No Account. No Expiry.

All nine core diagnostic modules are free forever. No trial period, no email
signup, no telemetry, no usage limits.

Upgrade to Pro

WP Health Inspector Pro unlocks the full 17-module diagnostic suite:

• Root Cause Analysis — correlates all findings into plain-language conclusions
• Request Profiler — per-request timing, memory, query count, and hook timeline
• Conflict Detector — hook conflicts, duplicate assets, and competing plugins
• Core Web Vitals — LCP, CLS, and INP estimates with actionable signals
• Performance Baselines — track regressions over time automatically
• Risk Indicators — deprecated hook scanner and WordPress.org compatibility API
• External Dependencies — outbound HTTP latency and failure monitoring
• Complete Server Audit — full php.ini audit, wp-config constants, and database details

See everything included in Pro →

• Autoload Governor — Remediation instructions and per-option cleanup recommendations
• Risk Indicators — WordPress.org compatibility API and deprecated hook scanner
• Time Bomb Detector — PHP version risk, stale plugin analysis, license key scan, update risk analysis
• Server and PHP Environment — Complete php.ini audit, wp-config constants, extension checklist, and database details
• Request Profiler — Per-request timing, memory, query, and hook timeline
• Root Cause Analysis — Correlates all data sources into plain-language findings
• Conflict Detector — Hook conflicts, duplicate assets, competing plugins
• External Dependencies — Outbound HTTP latency and failure monitoring
• Performance Baselines — Track regressions over time automatically
• Core Web Vitals — LCP, CLS, INP estimates with actionable signals