Devtard

This plugin automatically searches posts when they are published/imported/saved and adds new taxonomy terms (tags by default) if term names or related keywords from a user-created keyword list are found.
<h4>Features</h4>
<ul>
<li>Compatible with several post import plugins (<a href="https://wordpress.org/plugins/automatic-post-tagger/faq/" rel="ugc">FAQ #4</a>)</li>
<li>Supports custom taxonomies and post types; for example, APT is able to categorize posts (<a href="https://wordpress.org/plugins/automatic-post-tagger/faq/" rel="ugc">FAQ #6</a>), add tags/categories to WooCommerce products (<a href="https://wordpress.org/plugins/automatic-post-tagger/faq/" rel="ugc">FAQ #7</a>)</li>
<li>Supports UTF-8 characters, non-Latin and logographic alphabets (<a href="https://wordpress.org/plugins/automatic-post-tagger/faq/" rel="ugc">FAQ #5</a>), including Arabic, Chinese, Cyrillic etc.</li>
<li>Bulk tagging tool (with a scheduler) for processing multiple posts</li>
<li>Import/Export tools (CSV & JSON format support)</li>
<li>Configuration groups with custom rules for selected keyword sets; wildcard (regex) support for related keywords</li>
</ul>
See <a href="https://wordpress.org/plugins/automatic-post-tagger/screenshots/" rel="ugc">Screenshots</a> and <a href="https://wordpress.org/plugins/automatic-post-tagger/faq/" rel="ugc">FAQ</a> for more information.

Automatic Post Tagger

Adds relevant taxonomy terms to posts using a keyword list provided by the user.

Sadhan Pal

Cute Tags is a powerful tag generation plugin that helps you create relevant, SEO-friendly tags for your WordPress posts. Using intelligent algorithms based on YouTube search patterns and phrase combinations, it generates up to 30 unique tags from your post title.
<h4>Key Features</h4>
<ul>
<li>YouTube-Style Suggestions – Generates tags based on popular search patterns</li>
<li>Smart Phrase Combinations – Intelligently combines words from your title</li>
<li>Interactive Selection – Click to select/deselect tags before copying</li>
<li>One-Click Copy – Copy all or selected tags to clipboard instantly</li>
<li>Multi-Editor Support – Works with Classic Editor and Gutenberg</li>
<li>Secure & Fast – Follows WordPress security best practices</li>
<li>Translation Ready – Fully internationalized</li>
</ul>
<h4>How It Works</h4>
<ol>
<li>Click “Generate Tags” in the sidebar meta box</li>
<li>Review the generated tags (up to 30)</li>
<li>Click individual tags to select only the ones you want (optional)</li>
<li>Click “Copy Tags” to copy all tags to clipboard</li>
<li>Paste tags into your WordPress tag field. Done!</li>
</ol>
<h4>Tag Generation Algorithm</h4>
Cute Tags uses two complementary methods:
YouTube-Style Patterns (Priority): 
* Question patterns: “how to…”, “what is…”, “why…” 
* Tutorial patterns: “…tutorial”, “…guide”, “…for beginners” 
* Comparison patterns: “best…”, “…review”, “…vs” 
* Tips & tricks: “…tips”, “…tricks”, “…hacks” 
* Problem-solving: “…problems”, “…solutions”, “…fix”
Phrase Combinations (Secondary): 
* Individual meaningful words 
* 2-word combinations 
* 3-word combinations
<h4>Stop Words Filtering</h4>
The plugin automatically filters out common words that don’t add value: 
* Articles (the, a, an) 
* Conjunctions (and, or, but) 
* Prepositions (in, on, at, to, for) 
* Common verbs and modals
<h4>Privacy & Security</h4>
Cute Tags: 
* Does not collect any user data 
* Does not make external API calls 
* Processes all data locally on your server 
* Follows WordPress security standards 
* Uses nonce verification and capability checks 
* Sanitizes all inputs and escapes all outputs

Cute Tags – One-Click Smart Tag Generator

Automatically generate relevant tags for your posts using YouTube search suggestions and phrase combination logic.

Automatic Post Tagger vs Cute Tags – One-Click Smart Tag Generator