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Multisite search visibility indicator is a lightweight plugin that keeps you informed at a glance whether your site — or any site in your network — is accidentally blocking search engines.
WordPress has a built-in setting under Settings → Reading called “Search Engine Visibility”. When enabled, it adds a <code>noindex</code> directive that tells search engines not to index your site. This is easy to accidentally leave on after development, and notoriously hard to notice.
This plugin adds a persistent indicator to the WordPress toolbar so you never miss it again.
<h4>Features</h4>
<ul>
<li>Toolbar indicator visible to administrators at all times (front-end and back-end)</li>
<li>Color-coded status: green when search engines are allowed, yellow/red when blocked</li>
<li>Multisite ready: shows a per-site breakdown across your entire network</li>
<li>Each site in the dropdown links directly to its Reading Settings for a one-click fix</li>
<li>Bulk management page (Multisite only): allow or discourage search engines across all — or selected — sites in a single action</li>
<li>Zero configuration required — install and it just works</li>
<li>No external dependencies, no tracking, no bloat</li>
</ul>
<h4>Multisite Bulk Management</h4>
On a Multisite installation the plugin adds a Search Engine Visibility page under Network Admin → Settings. From there you can:
<ol>
<li>See every site in the network and its current visibility status</li>
<li>Select individual sites or all sites at once</li>
<li>Apply “Allow search engines” or “Discourage search engines” in one click</li>
</ol>
<h4>Who is this for?</h4>
<ul>
<li>Agencies managing WordPress Multisite networks</li>
<li>Developers who frequently spin up and hand off sites</li>
<li>Site owners who want a quick sanity check without digging through settings</li>
</ul>

Multisite search visibility indicator

Adds a toolbar indicator showing which sites discourage search engines. Supports WordPress Multisite with bulk management.

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Adds the canonical link to your site (<a href="https://wikipedia.org/wiki/Canonical_link_element" rel="nofollow ugc">Learn More</a>).
Activate and then set your permalinks to “Post name” under Settings > Permalinks. That’s it.
Verify that it’s working correctly with the <a href="https://addons.mozilla.org/addon/canonical-link/" rel="nofollow ugc">Firefox add-on</a>.
Supports the ability to customize the canonical link for any specific page, post, or even custom post types (including WooCommerce Products and bbPress Topics).

Multisite search visibility indicator vs Canonical Link