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 1 week 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 3 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:1#305by 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
- 859/day

Server Info
Down in the last 7 days:1#3,980by Usman Ali Qureshi17 days ago
Inspect WordPress, PHP, database, caching, SSL, and server health from one administrator-only dashboard.
- Installs
- 3K+
- Rating
- 3.8(12)
- Downloads
- 40/day

Show IP Address
Down in the last 7 days:10#6,979by Keith Griffiths7 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:27#17,374by 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:123#18,080by 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
Down in the last 7 days:113#21,093by 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
Up in the last 7 days:110#22,737by zibal4 months ago
Run admin-only diagnostics for Zibal gateway connectivity, outbound server IP status, and merchant code responses.
- Installs
- 40+
- Rating
- –
- Downloads
- 6/day

SiteHale
Down in the last 7 days:129#26,133by sitehale21 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:2,070#26,980by 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
Down in the last 7 days:215#27,823by npc0116 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
Up in the last 7 days:43#28,022by 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
- 0/day

SiteAssure
Up in the last 7 days:3,019#28,213by WPAssist1 day ago
Monitor website health, critical pages, forms and WooCommerce gateways, with optional cloud visibility, form and checkout tests.
- Installs
- 20+
- Rating
- –
- Downloads
- 62/day
Wizjo Monitor
Down in the last 7 days:258#30,515by 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

SiteIntelix
Down in the last 7 days:51#33,159by 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
Up in the last 7 days:12,717#34,275by 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

Titanium Error Intelligence
Down in the last 7 days:1,574#34,796by 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

Quantely Activity
#36,746by 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

CC-Sentry
#37,244by Clearcode9 years ago
This plugin integrates your WordPress site with Sentry error logging system.
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 0/day

SAC Database Inspector
Down in the last 7 days:4,778#39,694by 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

BePlus Support Snapshot
#43,293by 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

Health Radar
#43,440by 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

320px Site Audit
#45,105by 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
Print Basic Facts
Down in the last 7 days:9,300#46,281by 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
WebOsmotic Diagnostics Dashboard
Up in the last 7 days:9,359#49,050by sainawebosmotic72 months ago
Extends the default WordPress Site Health with deeper diagnostics, health scoring, actionable recommendations, and selected one-click fixes.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

MH Submission Diagnostics for Contact Form 7
Up in the last 7 days:19,954#49,144by Muhammad Haris1 month ago
Contact Form 7 submission diagnostics and logging for validation, mail delivery, browser events, repeaters, and file uploads.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

Depenova Impact Map
Up in the last 7 days:23,208#49,151by wpimpactmap1 month ago
See what your WordPress components affect before you update, disable or remove them.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

LIOSFERA Order Diagnostics
Up in the last 7 days:9,294#49,280by LIOSFERA12 days ago
Read-only WooCommerce order monitoring for suspicious delays, failed jobs, and status changes. No bank credentials required. Published by LIOSFERA.
- Installs
- <10
- Rating
- –
- Downloads
- 11/day

Phaerixa Discovery Forensics & Indexing
#49,478by Rob Art2 days ago
Discover what stops your pages being indexed. Scan SEO issues, track changes and investigate URLs with clear evidence and practical next steps.
- Installs
- <10
- Rating
- –
- Downloads
- 11/day

AiutoComputerHelp Live Request Monitor
#50,346by aiutocomputerhelp11 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
atec Translation Status
Up in the last 7 days:9,083#50,542by 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

Klydexa Site Integrity Audit
#50,617by klydexa3 days ago
Diagnose. Understand. Fix. Protect. Local-first health, security, compatibility, performance, database and plugin-conflict auditing for WordPress.
- Installs
- <10
- Rating
- –
- Downloads
- 11/day

Visibility Doctor for WooCommerce
Up in the last 7 days:19,744#50,957by timaub14 days ago
Tells you why a WooCommerce product is not listed in the shop, not found by search, or not purchasable. Read-only.
- Installs
- <10
- Rating
- –
- Downloads
- 6/day

NaveenCodes Site Diagnostics
Up in the last 7 days:20,075#51,234by Naveen Goyal2 months ago
All-in-one WordPress diagnostics plugin with conflict detection, Safe Mode, log analysis, performance, security, and local error guidance.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

Khukuri Speed X-Ray
Up in the last 7 days:1,632#51,247by bikrambk3 months ago
Stop guessing why your site is slow. See exactly what's costing you points, what each fix will gain, and what to do about it. Free forever.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

Phylax AI Crawler Inspector
Up in the last 7 days:5,480#51,675by Łukasz Nowicki2 months ago
Inspect how this site responds to AI-related agents. Audit robots.txt, llms.txt, redirects, headers and HTML without changing the site.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

HealthSweep Site Monitor
Up in the last 7 days:12,042#51,866by 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
Kodenzo Commerce Health
#51,914by Kodenzo LLP3 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
OrderGuard for Print on Demand
#52,323by epicshift2 months ago
Finds the paid orders your print-on-demand supplier never collected, and why sync fails. Six checks, no API keys needed.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

Fruti Media Integrity Audit
Up in the last 7 days:6,934#52,402by frutilabs1 month ago
Images missing after a migration or restore? See exactly which Media Library files WordPress expects but cannot find on disk - and change nothing.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

Fruti Revision Footprint Audit
Up in the last 7 days:6,934#52,419by frutilabs1 month ago
Read-only report of how many revisions each post carries and how much content they hold.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

Undergroundact Bug Reporter
Up in the last 7 days:13,306#52,422by 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

Bernerslee Site Diagnostics & Recovery
#53,550by 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

AutoRepair AI
Up in the last 7 days:12,987#53,735by tetsu03212 months ago
Diagnose common WordPress failures, apply low-risk repairs, and create recoverable plugin updates.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

Web Plura Diagnostics
Up in the last 7 days:13,537#53,765by Web Plura4 days ago
Check WordPress site health, email, performance, hosting, PHP, plugins, themes, and update readiness from one local dashboard.
- Installs
- <10
- Rating
- –
- Downloads
- 12/day
Web Plura Payment Gateway Monitor
Up in the last 7 days:8,821#53,767by Web Plura4 days ago
Review WooCommerce failed payments, pending orders, checkout readiness, local webhook signals, and gateway diagnostics.
- Installs
- <10
- Rating
- –
- Downloads
- 11/day
Espresso Diagnostics
Up in the last 7 days:2,116#54,303by jack6 years ago
Plugin that extracts data on WP installation, installed themes, installed plugins and server info for diagnostic purposes. Export data in csv and json
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

StorePlus SiteGauge
#54,421by 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

Ageroth Site Health
Up in the last 7 days:10,730#54,784by Andreas Gerogiakomos2 months ago
Read-only WordPress health checks and cache behavior diagnostics with live frontend validation and URL comparison.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

Zen Order Health Monitor
Up in the last 7 days:17,749#55,200by Tusher Ikbal1 month ago
Find stuck orders, failed-order spikes, likely duplicates, negative stock, and order-email configuration risks.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day

Happy Ordering
#55,231by Combustion Group9 months ago
Check Happy Ordering system status and report bugs to improve your ordering experience.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day