Best diagnostics plugins for WordPress
The most popular diagnostics plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Performance Lab leads with 100K+ active installs, ahead of Server Info (3K+) and Show IP Address (900+). All 118 plugins tagged “diagnostics” are below, with figures from WordPress.org that update every day.
Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.
Research this niche or see all plugins.
Top 10 diagnostics plugins
- 1.Performance Lab
The most installed diagnostics plugin, with 100K+ active installs. Rated 4.3 from 51 reviews, updated 2 months ago.
- 2.
Server Info3K+ active installs. Rated 3.8 from 12 reviews, updated 2 weeks ago.
- 3.
Show IP Address900+ active installs. Rated 5.0 from 5 reviews, updated 5 days ago.
- 4.
Commerza for WooCommerce90+ active installs. No reviews yet, updated 8 months ago. Tested only up to WordPress 6.9.11.
- 5.
Multisite Usage Scanner80+ active installs. No reviews yet, updated 10 months ago. Tested only up to WordPress 6.9.11.
- 6.atec 404 Tracker
50+ active installs. Only 2 reviews so far, updated 4 months ago.
- 7.
Zibal Advanced Connection Checker40+ active installs. No reviews yet, updated 4 months ago.
- 8.
SiteHale20+ active installs. Only 1 review so far, updated 2 weeks ago.
- 9.
Kelpiks FormProof20+ active installs. No reviews yet, updated 3 months ago.
- 10.
NPC Maintenance Inspector20+ active installs. No reviews yet, updated 2 weeks ago.
All 118 plugins tagged “diagnostics”
Performance Lab
Down in the last 7 days:2#306by WordPress Performance Team2 months ago
Performance plugin from the WordPress Performance Team, which is a collection of standalone performance features.
- Installs
- 100K+
- Rating
- 4.3(51)
- Downloads
- 809/day

Server Info
#3,970by Usman Ali Qureshi16 days ago
Inspect WordPress, PHP, database, caching, SSL, and server health from one administrator-only dashboard.
- Installs
- 3K+
- Rating
- 3.8(12)
- Downloads
- 39/day

Show IP Address
Down in the last 7 days:13#6,973by Keith Griffiths5 days ago
Let visitors check the IP address your website sees, with optional hostname, browser, and referrer details. Add a shortcode to a page, post, or widget …
- Installs
- 900+
- Rating
- 5.0(5)
- Downloads
- 23/day

Commerza for WooCommerce
Up in the last 7 days:45#17,322by Dmitry Kokorin8 months ago
Detect performance bottlenecks in WooCommerce stores and monitor checkout, cart, and order timing metrics. All data is stored locally on your site.
- Installs
- 90+
- Rating
- –
- Downloads
- 0/day

Multisite Usage Scanner
Up in the last 7 days:50#18,118by Dominic Johnson10 months ago
Scan your WordPress multisite network to identify which plugins are actively used across sites. Helps admins safely clean up unused plugins.
- Installs
- 80+
- Rating
- –
- Downloads
- 0/day
atec 404 Tracker
Up in the last 7 days:97#20,943by docjojo4 months ago
Lightweight 404 logger for tracking broken links and bot activity.
- Installs
- 50+
- Rating
- 5.0(2)
- Downloads
- 0/day

Zibal Advanced Connection Checker
#22,897by zibal4 months ago
Run admin-only diagnostics for Zibal gateway connectivity, outbound server IP status, and merchant code responses.
- Installs
- 40+
- Rating
- –
- Downloads
- 5/day

SiteHale
Down in the last 7 days:25#25,982by sitehale20 days ago
Free one-click Site Checkup — cron health, PHP fatals, database bloat, updates, SEO basics, admin audit, mail test — plus the SiteHale companion.
- Installs
- 20+
- Rating
- 5.0(1)
- Downloads
- 11/day

Kelpiks FormProof
Down in the last 7 days:2,204#26,994by Kelpiks Digital3 months ago
Audit Contact Form 7 configuration and run controlled email-path tests before a broken form costs you a lead.
- Installs
- 20+
- Rating
- –
- Downloads
- 0/day

NPC Maintenance Inspector
#27,824by npc0115 days ago
WordPress maintenance health-check tool with 9-point diagnostics, history tracking, and optional AI-powered reports.
- Installs
- 20+
- Rating
- –
- Downloads
- 11/day

Zoofi Ads.txt Helper for AdSense
#28,318by zoofiai2 months ago
Set up and diagnose Google AdSense code and ads.txt from one publisher ID, with duplicate and conflict checks.
- Installs
- 20+
- Rating
- –
- Downloads
- 2/day
Wizjo Monitor
Up in the last 7 days:283#30,346by studiowizjo2 months ago
Read-only health endpoint for Wizjo Tools monitoring. Checks database, storage, scheduled tasks, updates and PHP.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day

SiteAssure
Down in the last 7 days:605#31,195by WPAssist1 day ago
Monitor website health, critical pages, forms and WooCommerce gateways, with optional cloud visibility, form and checkout tests.
- Installs
- 10+
- Rating
- –
- Downloads
- 55/day

SiteIntelix
#33,045by Parag Das2 months ago
Developer tools for diagnostics, debugging, maintenance, and site administration.
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 0/day
Code Capsules Performance Monitor
#34,224by codecapsules2 months ago
See real-time PHP worker and web server performance for your WordPress site, right inside wp-admin.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day

CC-Sentry
#35,490by Clearcode9 years ago
This plugin integrates your WordPress site with Sentry error logging system.
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 0/day

320px Site Audit
Up in the last 7 days:6,352#35,604by appsmax2 months ago
A local, read-only WordPress check that shows what to fix, what is fine, and what could not be tested.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day

BePlus Support Snapshot
#36,180by Beplus4 months ago
Generate support snapshots, track changes over time, compare reports, and export a diagnostic package for faster WordPress troubleshooting.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day

Quantely Activity
#40,512by erravi1 month ago
Lightweight, privacy-conscious activity logger. Relate pageviews and events to visitors, browsers, devices, sources and other context.
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 0/day

Titanium Error Intelligence
Down in the last 7 days:12,060#44,649by Admin Plugins2 months ago
Detect PHP error spikes, recurring patterns, request impact and source-version changes with grouped local diagnostics.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day

Health Radar
Down in the last 7 days:9,490#45,386by Foysal Zihak7 months ago
Detect plugin conflicts, performance issues, PHP compatibility risks, and debug log errors from your WordPress dashboard.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
Print Basic Facts
Down in the last 7 days:1,875#46,501by Anthony Ledesma8 years ago
Print Basic Facts will display valuable, time saving, information for a WordPress site. Optimize your troubleshooting efforts with this lightweight ap …
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 0/day

SAC Database Inspector
Down in the last 7 days:1,697#48,098by Ask Adam1 month ago
Inspect WordPress database health, plugin footprints, autoloaded options, and questionable leftovers with carefully controlled maintenance tools.
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 0/day
PayInspector
#48,568by JoeAdroit1 month ago
Find out why WooCommerce payments fail. Get clear order diagnostics from the payment evidence your gateway provides.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

Undergroundact Bug Reporter
Up in the last 7 days:18,589#50,037by btolman2 months ago
Collect structured bug reports, screenshots or screencasts, and WordPress diagnostics without leaving the site being tested.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

Devenia Speed Optimization
Down in the last 7 days:248#50,300by Bjorn Solstad20 days ago
100% free local diagnostics and guided optimization for oversized WordPress media.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

wpBara Audit
Up in the last 7 days:6,764#50,329by wpbara1 month ago
One-click site audit: detect issues and download a full technical report with wpBara Audit.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day
atec Translation Status
#50,366by docjojo4 months ago
Check, diagnose, and validate WordPress core, plugin, and theme translations — including compiled translation status (WP 6.5+).
- Installs
- <10
- Rating
- 5.0(1)
- Downloads
- 0/day
HarborCache
Up in the last 7 days:6,832#50,581by shahidirfan1001 day ago
Persistent Redis object caching with scoped invalidation, local analytics, connection settings and diagnostics.
- Installs
- <10
- Rating
- 1.0(1)
- Downloads
- 11/day

SchedSense
Up in the last 7 days:2,117#50,741by shahidirfan1001 month ago
Fast diagnostics for Action Scheduler queues: review overdue and failed actions, likely sources, WP-Cron, loopback, and REST API health.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

Versys Site Health Toolkit
Up in the last 7 days:15,889#51,713by Versys Media2 months ago
Local WordPress health checks, component compatibility, safe maintenance tools, scan comparisons and downloadable support reports.
- Installs
- <10
- Rating
- –
- Downloads
- 2/day

Bernerslee Site Diagnostics & Recovery
Up in the last 7 days:19,349#51,898by bernerslee2 months ago
Find WordPress errors, connect them with recent changes, and troubleshoot uncertain causes with optional AI analysis.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

HealthSweep Site Monitor
Up in the last 7 days:20,545#52,493by Ravi Khadka7 months ago
Advanced WordPress Site Health, performance, security, cleanup, snapshots, alerts, and local speed benchmarking for admins.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

Aquilisio Activity Logbook
#52,659by Henry5 months ago
Local activity logging for WordPress and WooCommerce changes, with privacy-conscious defaults, review workflow, diagnostics, and CSV export.
- Installs
- <10
- Rating
- –
- Downloads
- 2/day

Klydexa Site Integrity Audit
Up in the last 7 days:20,138#52,865by klydexa2 days ago
Diagnose. Understand. Fix. Protect. Local-first health, security, compatibility, performance, database and plugin-conflict auditing for WordPress.
- Installs
- <10
- Rating
- –
- Downloads
- 6/day

HealthBeam
#53,335by VerseSofts6 months ago
Advanced diagnostics and monitoring for WordPress. Real-time debug logs, file integrity checks, and mail testing in a modern dashboard.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day
A1 Local Site Health Report Card
Up in the last 7 days:1,873#55,072by A1 Local5 months ago
Create a local-only WordPress site report card from observed admin, server, and configuration facts.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

KMS Field Health
Up in the last 7 days:1,847#55,132by hadi khodayari24 days ago
Explore ACF field groups and nested fields. Review configuration findings, evidence, and safe next steps. Read-only and free.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

Asneris SEO Toolkit
Down in the last 7 days:1,119#55,275by asneris3 months ago
Asneris SEO Toolkit is a WordPress plugin for technical SEO settings, diagnostics, monitoring, and indexing utilities.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

StorePlus SiteGauge
Up in the last 7 days:16,822#56,031by wpstoreplus1 month ago
Diagnose common WordPress performance risks with read-only checks for server, database, cache, cron, plugins, and media.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

DiagnosticIQ for WooCommerce
Up in the last 7 days:6,903#56,629by johnokeane3 months ago
Catch bugs before they cost you sales — 24/7 WooCommerce health monitoring, plus AI that pinpoints the cause and the fix when something breaks.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

AiutoComputerHelp Live Request Monitor
Up in the last 7 days:12,444#56,856by aiutocomputerhelp10 days ago
Admin-only live WordPress request diagnostics with filters, behavioral indicators, and temporary capture. No blocking or permanent access log.
- Installs
- <10
- Rating
- –
- Downloads
- 11/day

Auvrenth Health Monitor
Up in the last 7 days:8,064#56,866by Auvrenth Studio6 days ago
Know what needs attention on your WordPress site: focused health checks, clear fix guides, score history and optional agency monitoring.
- Installs
- <10
- Rating
- –
- Downloads
- 11/day

Cobalt Checkout Diagnostics for WooCommerce
Up in the last 7 days:8,238#57,234by Cobalt Branch Labs1 day ago
Troubleshoot WooCommerce cart and checkout configuration with local, read-only checks. Does not test payment completion.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day
Kodenzo Commerce Health
Up in the last 7 days:3,554#57,439by Kodenzo LLP2 days ago
Check your WooCommerce store's setup in one scan: payment gateways, shipping, tax, cron and updates. 35 read-only checks and a 0-100 health score.
- Installs
- <10
- Rating
- –
- Downloads
- 11/day

WPHI Diagnostic Suite Lite
Up in the last 7 days:3,430#57,729by bsha1001 month ago
Find what's breaking or slowing your site: grouped PHP errors, a change timeline, database, cron, plugin, mail and hosting checks. Read-only.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

1Gbits Site Move Inspector
#57,918by 1gbits3 months ago
Run a private, read-only hosting migration preflight and export a redacted environment report.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

AccessTrace for LearnDash
Up in the last 7 days:9,580#58,597by wpforwards26 days ago
Detects, logs and verifies LearnDash course enrollment and unenrollment events. LearnDash tested up to: 5.2.0
- Installs
- <10
- Rating
- –
- Downloads
- 11/day

Happy Ordering
Up in the last 7 days:10,681#58,599by Combustion Group9 months ago
Check Happy Ordering system status and report bugs to improve your ordering experience.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day
StoreClarity for WooCommerce
Up in the last 7 days:11,349#58,615by solvatanaka26 days ago
Investigate delayed WooCommerce background tasks and checkout-page setup with a local, read-only scan and clear next steps.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day