suppress

Add the Table of Contents Block anywhere in your Gutenberg editor. It scans H2–H6 headings in the post content and builds a nested, clickable table of contents. Links automatically work by adding IDs to headings.
No configuration needed. Works on single posts and pages (not archives or category listings).
<ul>
<li>No theme editing required 
You can activate the plugin on any site.</li>
<li>Compatible with Gutenberg / Classic Editor 
It processes the final rendered HTML.</li>
<li>SEO-friendly 
IDs are based on sanitize_title(), the same function WP uses for slugs.</li>
<li>Works with headings that already have IDs 
It does not overwrite existing IDs.</li>
</ul>
Example: 
– Structure Your Content – Write your post or page using semantic headings (H2, H3, etc.)—just like you normally would. 
– Insert the Table of Contents Block – Add the “Table of Contents Block” anywhere in your editor (e.g., right after the introduction). 
– Let It Work Automatically – The plugin scans your headings, builds a hierarchical, scroll-linked table of contents in real time, and updates dynamically as you edit.
<h3>Key Features</h3>
<ul>
<li>Server-side generated Table of Contents</li>
<li>Automatically detects H2–H6 headings</li>
<li>Generates nested lists based on heading hierarchy</li>
<li>Automatically adds IDs to headings when missing</li>
<li>Lightweight and simple</li>
<li>Useful for:
<ul>
<li>Adding a Table of Contents to a post or page</li>
<li>Generating heading IDs</li>
<li>Linking to sections within content</li>
</ul>
</li>
</ul>
<h3>Why use this plugin?</h3>
<ul>
<li>Smart Parsing: Supports H2 through H6 headings</li>
<li>Clean Output: Uses standard HTML lists for maximum theme compatibility</li>
<li>Non-intrusive: Does not modify existing heading IDs</li>
<li>Lightweight & Fast</li>
</ul>

Supplyist TOC Block

A simple Gutenberg block that automatically generates a nested table of contents from post headings.

tidyplugins

Tidy Table of Contents automatically generates a clean, accessible table of contents from your headings. It works out of the box with no configuration, and offers deep customization when you need it.
Key features:
<ul>
<li>🤖 Automatic — parses H2–H6 headings and generates the TOC instantly</li>
<li>♿ Accessible — proper ARIA roles, keyboard navigation</li>
<li>⚡ Performant — output cached per post, no render-blocking JS</li>
<li>🎨 Customizable — configure depth, position, title, open/collapsed state</li>
<li>📌 Per-post control — override global settings via meta box</li>
<li>🔗 Smooth scroll — animated anchor navigation</li>
<li>📱 Responsive — collapsible on mobile</li>
<li>🧩 Shortcode — <code>[tidy_toc]</code> for manual placement</li>
</ul>

Tidy Table of Contents

Automatic, accessible and performant table of contents for WordPress. Zero configuration needed.

Supplyist TOC Block vs Tidy Table of Contents