ckeditor/ckeditor4

Features

• Plugin-Based Architectures - Extends editor functionality by loading independent plugin modules that register new features and toolbar buttons.
• Rich Text Editors - Provides the core WYSIWYG rich text editing experience with images, tables, and media embeds.
• Rich Text WYSIWYG Editors - Provides a full-featured browser-based WYSIWYG editor for creating and formatting rich HTML content.
• Content Import and Export - Converts documents between Word, PDF, Markdown, and HTML formats for flexible content management.
• Image Embeddings - Uploads, captions, edits, styles, and pastes images from URLs into the content.
• Content Accessibility Audits - Scans editor content for accessibility issues and provides guidance to meet standards.
• Local Plugin Loading - Supports loading additional plugins from local folders by registering their path and name.
• Cross-Platform Editors - Embeds consistently across Angular, React, Vue, Electron, Android, and iOS environments.
• Hyperlink Management - Adds, edits, and attributes hyperlinks within the content.
• Publish-Subscribe Event Systems - Manages editor initialization, data flow, and user interactions through a publish-subscribe event system.
• Event Handling - Ships an event-driven lifecycle that allows listening to and firing custom editor events.
• Plugin-Based Editor Extensibility - Provides a plugin architecture for extending editor functionality with custom features, widgets, and integrations.
• Toolbar Button Customizations - Renders a fully customizable toolbar by mapping feature buttons to registered plugins and user configuration.
• Editor Toolbar Configurations - Allows customization of which formatting buttons and tools appear in the editor's toolbar.
• WYSIWYG - Operates directly on the browser's contenteditable element to provide real-time WYSIWYG editing.
• Editor Extension Creations - Enables building custom plugins, widgets, and themes to tailor the editing experience.
• Reusable Content Blocks - Provides a framework for creating reusable, self-contained content blocks within the editor.
• Accessibility Checking and Announcements - Ships built-in content accessibility checking and screen reader announcements for assistive technology users.
• Framework-Integrated Editor Components - Embeds the editor as a native component in Angular, React, or Vue applications.
• Editor Visual Themes - Supports visual theme customization of the editor interface, including headless mode with external UI frameworks.
• HTML Content Editors - Generates standard HTML code from the edited content for database storage.
• Independent Editor Instances - Creates, retrieves, and destroys multiple editor instances on a page with independent settings.
• Editor Image Uploaders - Enables file and image uploads directly within the editor to enrich content creation.
• Text Formatting Tools - Applies bold, italic, superscript, subscript, and inline code formatting to selected text.
• Rich Text Editor Embeddings - Provides native integration components for embedding the editor into Angular, React, and Vue applications.
• Module System Integrations - Supports installation and initialization via UMD and npm for seamless web application integration.
• Custom Plugin Development - Develops new plugins from scratch using the editor's framework, as legacy plugins are incompatible and require full reimplementation.
• Mobile Browsers - Functions on iOS 6+ Safari and Chrome for Android with limited usability.
• Document Versioning - Creates named versions, compares changes, and restores previous document states.
• Word Content Importers - Converts DOCX documents into HTML for editing within the rich text editor.
• DOCX Exports - Produces DOCX files that retain comments and tracked changes for further editing in Word.
• Heading Hierarchies - Organizes document sections using configurable heading levels and styles.
• URL-Triggered Media Embeds - Inserts videos, tweets, maps, or slideshows from third-party services by pasting a URL.
• Collaborative Editing Platforms - Offers threaded comments, change tracking, and document versioning for team-based content review.
• Content Migration Tools - Transforms legacy HTML content to align with the editor's supported features through configurable markup handling.
• Content Tag Filtering - Filters pasted and typed content against a configurable set of allowed tags and attributes.
• Formatting Artifact Removals - Strips all applied formatting from selected content, returning it to plain text.
• Markdown-HTML Content Converters - Generates GitHub-flavored Markdown instead of HTML from the editor content.
• Markdown to Rich Text Parsers - Converts Markdown syntax into rich text formatting as the user types.
• AI Content Generation - Integrates an AI assistant for rewriting, editing, translating, or creating new content.
• PDF Exports - Generates downloadable PDF files from edited documents for distribution and archiving.
• Rich Text Table Editors - Enables creating and nesting tables directly within the editor for structured content.
• Document Change Reviewers - Records all edits made to a document and allows accepting or rejecting them.
• Pasted Content Normalization - Preserves original formatting when pasting content from Google Docs or LibreOffice Writer.
• Autosave Mechanisms - Periodically saves editor content to prevent data loss during editing sessions.
• Plugin Marketplaces - Provides a marketplace for browsing, installing, and managing community-contributed plugins.
• Plugin Compatibility Layers - Provides backward compatibility for older plugin APIs while supporting modern plugin development.
• Accessibility Compliance Verifiers - Audits and fixes content accessibility issues to ensure output meets WCAG standards.
• Screen Reader Optimizations - Ships built-in screen reader announcements that broadcast UI updates to assistive technologies.
• Editor Compatibility Checks - Detects unsupported environments and falls back to a plain text area for compatibility.
• Content Accessibility Auditors - Provides an add-on that audits edited content for accessibility issues and suggests fixes.
• Quote Blocks - Provides block quote insertion to highlight quoted text with indentation and styling.
• Drag-and-Drop File Upload - Accepts image files dragged from the desktop and uploads them directly into the editing area.
• Font Property Adjustments - Changes font family, size, color, and background color for selected text.
• Right-To-Left Support - Supports right-to-left text display and editing with localization for over 70 languages.
• Paragraph Indentations - Adjusts the left margin of paragraphs or list items to structure content.
• Syntax-Highlighted Code Blocks - Displays code listings with syntax highlighting for improved readability.
• UI Skinning - Switches visual appearance by loading CSS and image assets from a named skin directory.
• Legacy Browser Support - Supports the latest stable releases of major desktop browsers including Internet Explorer 11.
• Embedded Comment Threads - Discusses specific parts of a document through threaded comments with team members.
• Editor Fullscreen Toggles - Provides a fullscreen mode toggle to expand the editor to the entire browser viewport.
• Embedded HTML Snippets - Allows inserting raw HTML snippets directly into the editor content for custom markup.
• Inline Text Transformations - Automatically corrects typos and applies formatting as the user types in the editor.
• Description List Formatting - Creates ordered, unordered, to-do, and block-quoted lists with various markers.
• Standalone Editors - Battle-tested HTML rich text editor.

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