What is a WYSIWYG editor?
The "WYSIWYG" acronym stands for (What You See Is What You Get), is often used to describe a text and document editor features tools and libraries. As an example Microsoft Word and Google Document are the right examples for WYSIWYG editors.
The WYSIWYG editors are commonly used in blogging and web publishing, email editing, email list creation, and book writing.
Froala also offers an inline editing mode which is similar to Medium and Ghost blog editor.
With Froala you switch easily to full-screen mode, print the content directly, view your content HTML codes, and download your content in PDF format.
Editor.js is an inline WYSIWYG editor that is generates clean structured JSON data. It is an ideal choice for developers who want to keep their content ready for Google's AMP, mobile content, instant articles, text-to-speech apps, and speech readers.
Editor.js offers a dozen of useful plugins, which include media plugins, code editors extensions, custom lists, and media embedded plugins. Developers also can extend it with their own custom plugins.
3- Open WYSIWYG
The editor comes with a visual table creation and editing set, color picker, customized interface, and HTML editing mode.
The project is true open-source which is released under LGPL License.
Summernote is an open-source released under the MIT License.
Tiny supports desktop, and mobile screens, as it comes with a sophisticated table design tool set, a built-in spellchecker, iFrame support, color picker, emojis, table-of-content creator, date/ time insertion and template generator/ manager.
Quill is yet another open-source clutter-free WYSIWYG editor for web projects. This too I used for some of my Meteor projects. It is used by companies like SalesForce, Reedsy, Lever, and several others.
Quill supports media embedding out-of-box, and offers several developer-friendly modules, extensions which are easy to customize and extend.
7- Aloha Editor
Aloha Editor, is an HTML WYSIWYG editor that supports rich media embedding like videos, audios, graphics, and animation. Aloha is released under its own license.
Aloha is originally made for the Gentics CMS project, then released its source code alongside several components of the project.
Medium editor offers a simple WYSIWYG in-line editor, which works directly on your HTML content. It is tested on several browsers as Mozilla Firefox, Internet Explorer IE 9+, Edge, Safari, and Google Chrome.
Pell is a lightweight open-source WYSIWYG text editor for web without any external or massive JS dependencies. The zipped/ minimized size of the library is 1.34Kb, which is extremely tiny comparing to other libraries on this list.
Medium.js is a Medium-inspired WYSIWYG content editor that edits
contenteditable HTML content. It comes with a built-in customizable hotkeys support, and it is HTML5 compliant which means it works smoothly on Safari, Google Chrome, Opera, IE8+, and Edge.
If you want a WYSIWYG editor similar to Google Doc, Microsoft Word, and LibreOffice editor, then Ckeditor is the right choice.
ContentTools is an easy-to-embed library, and features images uploading, multilingual support, as it allows developers to add their own custom tools easily.
Django users can integrate ContentTools with Django admin by the help of Alberto Centelles & Guillaume Piot extension.
Jodit is a WYSIWYG editor which written completely in TypeScript. It offers a light version which is an open-source project that licensed under the MIT License, and a Pro version with more custom features.
Jodit works seamlessly with Google Chrome, Internet Explorer 11, Firefox, Safari and Microsoft Edge.
The SunEditor comes with a built-in advanced image editor that supports several image editing options. It has a rich documentation that helps developers easily integrate it into their projects, extend it, and more.
When you use SunEditor in your project you can rest assured that you can paste content from Microsoft Word and Excel.
Draft.js is a rich Text editor library for React projects. It is a highly extensible and customizable library, supports media embedding, and uses immutable.js which utilize persistence memory state.
ProseMirror is a clutter-free rich text, WYSIWYG editor that supports Markdown, XML, and HTML. It is a modular framework, that developers can extend it with their custom-built extensions and modules.
ProseMirror also comes with a built-in code editor, footnotes manager, a linter, a history manager that track all changes, and customized menu.
The project is an open-source that is released under the MIT License.
Trix is a free WYSIWYG editor for HTML content. It can work directly to
Trix is an open-source originally developed by Basecamp the creators of Ruby on Rails.
SCEditor is an old school HTML and BBCode WYSIWYG editor with a retro interface. It works directly to the Textarea field and comes with dozens of themes and customized options.
It is an ideal solution for webmasters who still use old style BB forums and want to change to a different WYSIWYG editor.
SCEditor offers several plugins for MyBB forum, PHPBB, PunBB, Question2Answer forum (paid), SMF forum (paid plugin).
19- TOAST UI
ToastUI is a complete open-source library and tool set that level up your web up with fancy and functional features. One of their libraries is WYSIWYG editor.
The Toast UI WYSIWYG text editor features a tool-rich panel and editor, table manager, checklist creator, built-in code editor, Markdown support, syntax highlighting ,split pane viewer, and an embedded image editor,
Toast UI WYSIWYG editor also comes with unique features as live preview, chart design, and scroll-sync option which is useful for collaborative editing.
20- Pen Editor
WangEditor is an easy-to integrate, configure, and works seamlessly with all browsers. It supports YouTube embedded media, image attachments, emojis, table editing with advanced options, and a built-in code editor with a syntax highlighting.
Unfortunately, it does not support mobile browsers or small screens yet, and there is no support for IE browsers.
EpicEditor is a free, and open-source project that is released under the MIT License. However, you should consider using another library as EpicEditor didn't receive any update for years and it is no longer maintained.
WYSIWYG editor libraries are essential for creating web apps with rich text editing features, as collaborative editing, forums, wikis, CMS, and support systems.
Here, we listed the best open-source free WYSIWYG editors for text, HTML, and Markdown for developers to choose from. If you know of any other similar library that we did not list here, let us know.