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.

Arunas Liuiza

A tiny and simple to help with navigation in long texts by forming an automatic Wikipedia-like table of contents.
It works by scanning the text for headings (<code><h1>-<h6></code> HTML tags). If more than a certain amount of headings (3 by default) are found – a table of contents with bookmarks is formed and inserted to the post content. Location (above or below) the text can be chosen in settings page.
TOC is formed as HTML5 <code><nav></code> element with nested ordered list inside. No specific styling is provided, so that it fits organicaly into the text. If you need specific styling, include it to your theme’s CSS.
You can also use a shortcode – <code>[toc]</code>, template tags – <code>get_toc()</code>/<code>the_toc()</code> and a widget – <code>tinyTOC Widget</code>.
The plugin is translation ready and has Lithuanian translation.
Also try out my other plugins:
<ul>
<li><a href="http://arunas.co/cc" rel="nofollow ugc">Content Cards</a> – a plugin that makes ordinary web links great by making it possible to embed a beautiful Content Card to link to any web site.</li>
<li><a href="http://arunas.co/gust" rel="nofollow ugc">Gust</a> – a Ghost-like admin panel for WordPress, featuring Markdown based split-view editor.</li>
<li><a href="http://arunas.co/tinycoffee" rel="nofollow ugc">tinyCoffee</a> – a PayPal donations button with a twist. Ask people to treat you to a coffee/beer/etc. </li>
<li><a href="http://arunas.co/tinysocial" rel="nofollow ugc">tinySocial</a> – a plugin to display social sharing links to Facebook/Twitter/etc. via shortcodes</li>
<li><a href="http://arunas.co/tinyrelated" rel="nofollow ugc">tinyRelated</a> – a plugin to manually assign and display related posts.</li>
<li><a href="http://arunas.co/tinyip" rel="nofollow ugc">tinyIP</a> – Premium – stop WordPress users from sharing login information, force users to be logged in only from one device at a time.</li>
</ul>
An enormous amount of coffee was consumed while developing these plugins, so if you like what you get, please consider treating me to a <a href="http://arunas.co#coffee" rel="nofollow ugc">cup</a>. Or two. Or ten.
Cover image credit: <a href="https://www.flickr.com/photos/adactio/1523797880/" rel="nofollow ugc">Jeremy Keith</a>

tinyTOC

Automaticly builds a Table of Contents using headings (h1-h6) in post/page/CPT content.

SmoothTOC vs tinyTOC