Tobias Nyholm

This plugin puts a table of contents on your page. You just need to type <code>[toc levels=3 title="Table of contents"]</code> in the page/post editor. That’s it! 
You dont need to edit your themes source code. The plugin allows you to set a title of the toc box. You can also choose which heading tags (h1,h2,h3,h4 etc) 
you want to have in the table of contents. For more information see installation page or the 
<a href="http://www.webfish.se/wp/plugins/seo-friendly-table-of-contents" title="Webfish - WordPress plugin" rel="nofollow ugc">Webfish</a> homepage.

Seo Friendly Table of Contents

A simple seo friendly table of contents plugin that does not require editing in your themes source code.

Hardik

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.
<h4>Features</h4>
<ul>
<li>Automatic TOC generation: Creates a table of contents based on your post’s headings</li>
<li>Customizable appearance: Change colors, font size, and width</li>
<li>Flexible placement: Insert TOC at the top or after the first paragraph</li>
<li>Heading selection: Choose which heading levels to include (H1-H6)</li>
<li>Shortcode support: Use [smooth_toc] anywhere in your content for manual placement</li>
<li>Per-post control: Enable/disable TOC for individual posts</li>
<li>Mobile-friendly: Responsive design that works on all devices</li>
<li>Translation-ready: 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.

Seo Friendly Table of Contents vs SmoothTOC