ingobaab

BAAB Insights runs inside your WordPress admin. It builds an on-screen report (overview table, advisor tabs) and a JSON data block you can copy. For a more detailed report on the BAAB site, open https://baab.de/insights/ and paste your JSON there when you are ready (that step is optional and only happens if you copy data out of WordPress yourself).
What this version includes
<ul>
<li>Admin page under “BAAB Insights” (capability: <code>manage_options</code>)</li>
<li>One-click report generation (AJAX, same-site only) with database, object cache, media, and SSL advisors</li>
<li>Read-only JSON export with compact formatting for large lists</li>
<li>English source strings with German translations (<code>de_DE</code>)</li>
<li>Optional activation redirect to the plugin screen (single activation only)</li>
</ul>
Privacy and external connections
<ul>
<li>No phoning home: The plugin does not send analytics or telemetry to BAAB or any third party. No license pings, no usage tracking, no crash reporting.</li>
<li>Your data stays on your server unless you explicitly copy the JSON elsewhere.</li>
<li>Outbound HTTP(S) is limited to your own site’s URLs: optional HEAD requests to your configured home URL (HTTPS for HSTS detection, HTTP for redirect-to-HTTPS checks). This is not a call to the plugin author; it uses WordPress’s HTTP API to inspect your public responses.</li>
<li>For SSL details, the plugin may open a TLS connection to your site’s host to read the presented certificate (same host as your WordPress URL). By default, fields like certificate subject, SAN list, and full site URL are not included in the JSON export unless you opt in by defining <code>BAAB_DISABLE_SENSITIVE_OUTPUT</code> as <code>false</code> in code.</li>
</ul>
Optional commercial product
<ul>
<li>The admin screen may link to a PRO offering on the author’s site. The free plugin on WordPress.org remains fully functional for analysis; the PRO product is optional.</li>
<li>The web app for extended analysis based on your JSON export: https://baab.de/insights/</li>
</ul>

BAAB Insights

BAAB Insights analyzes your WordPress installation locally in the admin and helps you spot performance, database, cache, media, and SSL issues.

Siteimprove

The Siteimprove CMS Plugin bridges the gap between the WordPress content management system (CMS) and the Siteimprove Intelligence Platform. Now you can scan your website for errors as soon as a page is published, allowing you to fix mistakes, optimize content, and manage your site more efficiently. 
The plugin also provides you access to Prepublish, an add-on which allows you to check your page for issues before it has been published.

Turn your most complex website challenges into manageable tasks—all from a single platform

BAAB Insights vs Siteimprove