VOID Technology

Linkable is a lightweight WordPress plugin that automates internal linking by converting defined keywords into links to selected posts or pages.
Core functionality: 
* Automatically links keywords to chosen posts or pages 
* Works on singular posts and pages by filtering <code>the_content</code> at priority 20 
* Searches for keyword matches inside <code></code>, <code><li></code>, <code></code>, <code></code>, and <code></code> tags 
* Skips self-links by excluding the current post from the keyword map 
* Uses the Yoast SEO title for link tooltips when Yoast is active, otherwise falls back to the WordPress title 
* Preserves existing <code><a></code> tags and shortcodes by backing them up before processing and restoring them afterward
Keyword management: 
* Keywords are stored per post and per page as JSON in the <code>linkable_tags</code> post meta field 
* <code>linkable_tags</code> is registered with REST support, sanitized via <code>sanitize_text_field</code>, and restricted to users with <code>edit_posts</code>
Settings: 
* Accessible via Settings → Linkable 
* <code>max_links_per_target</code>: limits how many times the same target can be linked from one post (default 1) 
* <code>first_occurrence_only</code>: when enabled, each keyword is linked only once per post
Performance: 
* Builds a global keyword map from all published posts and pages with <code>linkable_tags</code> 
* Caches the keyword map with a transient (<code>global_linkable_tag_map</code>) for one hour 
* Query optimized to fetch only IDs and avoid unnecessary meta/term caching
Editor compatibility: 
* Works with both the block editor and the classic editor 
* Enqueues an admin sidebar panel script (<code>static/js/admin-sidebar-panel.js</code>) with WordPress dependencies and versioning via <code>filemtime</code>
Security: 
* URLs are properly escaped with <code>esc_url</code> 
* Link titles are sanitized and HTML-escaped 
* Meta registration includes capability and sanitization checks
<h3>License</h3>
This plugin is licensed under the GPLv2 or later.

Linkable


I love it, when plugins doesn't get bloated with things not related to the task at hand. This just does the job, plain and simple.


Simple but functional

Automatically link keywords in your content to internal pages or posts. Simple, fast, and Gutenberg-compatible.

beeclear

BeeClear Smart Link Manager automatically injects internal links into your content at render time, based on keyword rules you define. Links are never saved into post content — they are applied dynamically through the <code>the_content</code> filter, so your database stays clean and all changes are instantly reversible.
<h4>How it works</h4>
<ol>
<li>Define a linking rule: choose a phrase, target URL, and optional attributes (rel, title, aria-label, class).</li>
<li>Build the index — either manually with one click or automatically on each post save.</li>
<li>The plugin injects matching links on the fly whenever a post is rendered.</li>
</ol>
No content is permanently modified. Deactivating the plugin removes all links instantly.
<h4>Free version features</h4>
<ul>
<li>Rule-based internal linking — phrase and token syntax with optional case-sensitivity matching.</li>
<li>Full attribute control — set <code>rel</code>, <code>title</code>, <code>aria-label</code>, and <code>class</code> on each link for SEO and accessibility.</li>
<li>Per-page link limits — cap how many times a phrase can be linked on a single page.</li>
<li>One-click index rebuild — manual rebuild with a live summary, or automatic rebuild triggered by post updates.</li>
<li>Import / export — move rule sets between sites or environments in seconds.</li>
<li>Clean admin UI — sortable rule tables, inline editing, and a metabox for per-post overrides.</li>
<li>Gutenberg and Classic Editor compatible — works with any content editor.</li>
<li>Zero HTTP requests — scanning and index building use internal WordPress APIs (WP_Query + options), not loopback HTTP calls.</li>
</ul>
<h4>Premium version features</h4>
<ul>
<li>Semantic keyword enhancement</li>
<li>Custom external linking rules</li>
<li>Extended rule logic and priorities</li>
<li>Page-level priority settings</li>
<li>Activity log with operation history</li>
</ul>
<a href="https://beeclear.pl/en/internal-external-link-manager/" rel="nofollow ugc">Learn more about BeeClear Smart Link Manager →</a>

BeeClear Smart Link Manager

Automatic internal linking for SEO: define keyword rules, set attributes and limits, rebuild the index in one click — no content changes.

Linkable vs BeeClear Smart Link Manager