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Free Plugin by CompatShield v7.0.7

Plugin Compatibility Checker

Scan and check your WordPress site for PHP, Database (MySQL/MariaDB), and Plugin compatibility to ensure safe upgrades to WordPress 7.0 and beyond.

Plugin Compatibility Checker

The facts

Rating
4★ from 10
Active installs
9k+
Price
Free
Last updated
20 Aug 2026
Added
Aug 2020
Requires WP
5.0
Tested up to
WP 7.1
Requires PHP
7.2
Downloads
107,951

Our analysis

AI-assisted

The Plugin Compatibility Checker is a WordPress plugin designed to help you maintain the stability and security of your site by checking the compatibility of installed plugins with your PHP and database versions. It scans for potential issues that could arise from updates, particularly focusing on the stricter requirements introduced in WordPress 7.0 regarding database compatibility.

This plugin is suitable for WordPress site owners who want to ensure their plugins are compatible with the current versions of PHP and MySQL/MariaDB. It provides essential warnings before upgrades, helping to prevent potential site issues.

Best for: WordPress site owners looking to ensure plugin compatibility and site stability.

What it does well

  • Scans for PHP compatibility of installed plugins
  • Detects MySQL and MariaDB version compatibility
  • Warns about potential upgrade issues
  • Active installation count of 9,000
  • High directory score of 82/100

Where it falls short

  • Requires a subscription for full functionality
  • Limited features in the free version
  • Pro version needed for advanced insights and notifications

Verdict

The Plugin Compatibility Checker offers essential compatibility checks for WordPress plugins, but users may need to consider upgrading for more comprehensive features.

From the developer

CompatShield's own description of Plugin Compatibility Checker, lightly tidied.

The Plugin Compatibility Checker helps you keep your WordPress site stable and secure by scanning installed plugins for PHP, Database, and WordPress version compatibility.

🆕 WordPress 7.0 Database Readiness
WordPress 7.0 introduces stricter database requirements (MySQL 8.0+ / MariaDB 10.6+). Many hosting environments still run older database versions which may silently block updates. This plugin now detects database compatibility and warns you before upgrading.

$1/month License Required (Entry Plan)
You must subscribe to the CompatShield Portal ($1/month recurring) to obtain a license key. Once activated, you will be able to see plugin compatibility results (up to PHP 8.5) and database compatibility directly inside your WordPress admin.

📺 Video Tutorial
Watch step-by-step how to activate your license & run your first scan:

Quick Setup Steps
1) Subscribe → Get your license key from the Portal
2) Add your domain inside the License tab
3) Copy your License Key
4) Paste License Key inside Plugin Settings in WP Admin
5) Click Validate License
6) Click Save Settings
7) Go to Plugin Main Page → Click Rescan

Pro Version (Upgrade)
Upgrading to Pro unlocks the full CompatShield Portal Dashboard with advanced features — vulnerability summary, detailed scan results, notifications, historic analysis, plugin issues overview, premium ZIP upload scanning, and multi-layer compatibility intelligence including database upgrade readiness.

Subscribe / Upgrade to Pro: https://www.compatshield.com/

✨ Key Features

  • PHP Compatibility Check – Scan plugins for PHP compatibility.

    • $1/month license: Shows PHP compatibility results directly inside WP Plugin backend (up to PHP 8.5)
    • Pro license: Deeper breakdowns, insights, and analysis inside Portal Dashboard

    Database Compatibility Check (NEW 🚀) – Detect MySQL/MariaDB version and ensure WordPress 7.0 readiness.

    • Detects outdated MySQL (< 8.0) and MariaDB (< 10.6)
    • Warns if hosting environment may block WordPress updates
    • Helps prevent upgrade failures
    • Pro: Advanced insights and upgrade recommendations

    Plugin Rescan – Quickly rescan whenever you install or update plugins.

    Email Notifications (Pro) – Get notified when scans complete or risks are detected.

    Portal Integration (Pro) – View full detailed results in the CompatShield Portal Dashboard.

    Vulnerability Summary (Pro) – Basic vulnerability insights available in the Portal.

    “No Data” Plugins Handling – Easily identify custom/premium plugins or removed versions not available on WordPress.org.

    Read the full description on the official page →

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