Jamie Dąbrowiecki

<p>Headingo is a lightweight utility plugin that allows administrators to control which heading levels are available in the editor toolbar. This tool only works for websites using the Classic Editor.</p>
<p>These settings are applied to all users with editing permissions.</p>
<p>The configurable heading levels are:</p>
<ul>
<li>Heading 1</li>
<li>Heading 2</li>
<li>Heading 3</li>
<li>Heading 4</li>
<li>Heading 5</li>
<li>Heading 6</li>
<li>Preformatted</li>
</ul>
<p>This is especially useful for removing the Heading 1 (H1) option to prevent editors from mistakenly selecting it, as well as removing heading levels which are not required on your website.</p>
<p>This plugin is intended for websites that rely on the Classic Editor editing experience. It does not attempt to modify the Block Editor (Gutenberg), where heading availability is governed by editor and theme configuration (theme.json) by design. The Classic Editor plugin is required for this plugin to work (or a theme that allows you to switch to the Classic Editor without the plugin).</p>
<h3>Classic Editor</h3>
<p>The Classic Editor (TinyMCE) is fully supported. Selected heading levels and Preformatted can be hidden from the formatting dropdown while remaining available via keyboard shortcuts or pasted HTML. The Paragraph option is always available and cannot be toggled.</p>
<h3>Block Editor (Gutenberg)</h3>
<p>This plugin does not control heading levels in the Block Editor. Gutenberg does not currently provide a reliable API for plugins to override available heading levels, as these are controlled by editor and theme settings.</p>


Headingo

Choose which heading levels are visible in the Classic Editor toolbar.

Hardik

<p>SmoothTOC automatically generates a Table of Contents for your posts and pages based on your chosen headings (H2, H3, etc). You can insert the TOC automatically (top or after first paragraph) or manually using the [smooth_toc] shortcode. The plugin is highly customizable, translation-ready, and built to meet WordPress.org review standards.</p>
<h4>Features</h4>
<ul>
<li><strong>Automatic TOC generation</strong>: Creates a table of contents based on your post’s headings</li>
<li><strong>Customizable appearance</strong>: Change colors, font size, and width</li>
<li><strong>Flexible placement</strong>: Insert TOC at the top or after the first paragraph</li>
<li><strong>Heading selection</strong>: Choose which heading levels to include (H1-H6)</li>
<li><strong>Shortcode support</strong>: Use [smooth_toc] anywhere in your content for manual placement</li>
<li><strong>Per-post control</strong>: Enable/disable TOC for individual posts</li>
<li><strong>Mobile-friendly</strong>: Responsive design that works on all devices</li>
<li><strong>Translation-ready</strong>: Fully translatable using WordPress translation system</li>
</ul>
<h4>Usage</h4>
<ol>
<li>Install and activate the plugin</li>
<li>The TOC will automatically appear in your posts and pages</li>
<li>Configure your settings under Settings > SmoothTOC</li>
<li>(Optional) Use the [smooth_toc] shortcode in your posts/pages for manual TOC placement</li>
</ol>


SmoothTOC

Automatically generates a Table of Contents for your posts and pages.

Headingo vs SmoothTOC