cclin Smart Table of Contents is a lightweight and flexible TOC plugin built specifically for long-form content, tutorials, and documentation-style websites.

This plugin focuses on reading experience, content structure, and navigation clarity, making it ideal for blogs, technical articles, and knowledge bases.

Key Features

Automatically extract headings from H2 to H6 (configurable)
Clean and structured hierarchical TOC output
Automatic heading numbering (1, 1.1, 1.1.1)
Smooth scroll navigation
Scrollspy support (active heading highlight while scrolling)
Multiple display positions:
- Inline TOC at the top of content
- Fixed sidebar TOC
Independent expand/collapse behavior for different TOC modes
Auto insert TOC into content
Support for custom post types
Gutenberg-compatible (works seamlessly with block editor content)
Fully internationalized (i18n ready)
Lightweight, clean OOP architecture

Designed for

cclin Smart Table of Contents is especially suitable for:

Long-form blog posts
Technical tutorials
Documentation websites
Knowledge bases
Structured academic or research content

Customization

Instead of requiring users to write custom CSS, the plugin provides structured options such as:

Heading levels selection
Numbering toggle
Display position control
Sticky offset settings
Expand / collapse behavior

This ensures both flexibility and safety while maintaining performance and compatibility.

Third-Party Libraries

This plugin bundles the following third-party library:

Select2 (https://github.com/select2/select2)
License: MIT
License file included in: /assets/vendor/select2/LICENSE