Summernote — Simple WYSIWYG Rich Text Editor

Introduction

Summernote is an open-source WYSIWYG editor built on top of jQuery and Bootstrap. It provides a clean toolbar for formatting text, inserting images via drag-and-drop, embedding videos, and editing raw HTML, making it a practical choice for CMS backends, admin panels, and content management forms.

What Summernote Does

• Renders a rich text toolbar with bold, italic, lists, links, and heading controls
• Supports drag-and-drop and paste image upload with configurable callbacks
• Provides a code view toggle for direct HTML editing
• Offers an API for programmatic content manipulation and event hooks
• Works with Bootstrap 3, 4, and 5 or in a standalone Lite mode without Bootstrap

Architecture Overview

Summernote attaches to a contentEditable div and intercepts user interactions through an event-driven module system. Each toolbar button maps to a module (e.g., style, image, link) that manipulates the DOM via document.execCommand or custom range-based operations. A plugin architecture allows third-party extensions to register custom buttons, dialogs, and behaviors.

Self-Hosting and Configuration

• Include jQuery and Bootstrap CSS/JS, then add the Summernote CSS and JS files
• Initialize with $(selector).summernote({ height: 300 }) and customize toolbar buttons
• Configure image upload callbacks via onImageUpload to send files to your server
• Use summernote-lite for a Bootstrap-free version with built-in styles
• Install plugins as separate JS files that hook into the module system

Key Features

• Zero-config setup: a single line of JavaScript activates the editor
• Table creation and editing with row/column management
• Custom toolbar layout with configurable button groups
• Multilingual support with community-contributed language packs
• Extensible plugin ecosystem for features like emoji, math, and spell check

Comparison with Similar Tools

• TinyMCE — more feature-rich with premium plugins but requires a license for advanced features; Summernote is fully open source
• CKEditor 5 — modern block-based architecture with a steeper integration curve; Summernote is simpler to drop in
• Quill — framework-agnostic with a document model (Delta); Summernote stays closer to raw HTML
• Tiptap — headless editor built on ProseMirror; more flexible but requires building your own UI

FAQ

Q: Does Summernote require jQuery? A: Yes, Summernote depends on jQuery. The Lite build removes the Bootstrap dependency but still needs jQuery.

Q: Can I customize the toolbar? A: Yes. Pass a toolbar array in the options to include only the button groups you need.

Q: How do I handle image uploads server-side? A: Use the onImageUpload callback to intercept dropped or pasted images and send them to your API via AJAX, then insert the returned URL.

Q: Is Summernote accessible? A: It provides basic keyboard shortcuts and ARIA attributes, though full WCAG compliance depends on your integration.

Sources

• https://github.com/summernote/summernote
• https://summernote.org/