Today CommonMark is the de-facto Markdown standard. GFM (GitHub Flavored Markdown) is another popular specification based on CommonMark - maintained by GitHub, which is known as the biggest Markdown user. TOAST UI Editor respects both CommonMark and GFM specifications. Write documents with ease using productive tools provided by TOAST UI Editor. You can open this document wherever the specifications are supported.

Monthly Downloads: 0
Programming language: TypeScript
License: MIT License
Tags: Editors     HTML     UI     Wysiwyg     Jquery-plugin     JavaScript     Browser     Editor     Markdown     Preview     Richtext     Toast     GFM     Viewer     Tui    
Latest version: v2.5.1

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GFM Markdown and WYSIWYG Editor - Productive and Extensible

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๐Ÿšฉ Table of Contents

  • [Packages](#-packages)
  • [Why TOAST UI Editor?](#-why-toast-ui-editor)
  • [Features](#-features)
  • [Examples](#-examples)
  • [Browser Support](#-browser-support)
  • [Pull Request Steps](#-pull-request-steps)
  • [Contributing](#-contributing)
  • [TOAST UI Family](#-toast-ui-family)
  • [Used By](#-used-by)
  • [License](#-license)

๐Ÿ“ฆ Packages


Name Description
@toast-ui/editor Plain JavaScript component

TOAST UI Editor's Wrappers

Name Description
@toast-ui/react-editor React wrapper component
@toast-ui/vue-editor Vue wrapper component

TOAST UI Editor's Plugins

Name Description
@toast-ui/editor-plugin-chart Plugin to render chart
@toast-ui/editor-plugin-code-syntax-highlight Plugin to highlight code syntax
@toast-ui/editor-plugin-color-syntax Plugin to color editing text
@toast-ui/editor-plugin-table-merged-cell Plugin to merge table columns
@toast-ui/editor-plugin-uml Plugin to render UML

๐Ÿค– Why TOAST UI Editor?

TOAST UI Editor provides Markdown mode and WYSIWYG mode. Depending on the type of use you want like production of Markdown or maybe to just edit the Markdown. The TOAST UI Editor can be helpful for both the usage. It offers Markdown mode and WYSIWYG mode, which can be switched any point in time.

Productive Markdown Mode


CommonMark + GFM Specifications

Today CommonMark is the de-facto Markdown standard. GFM (GitHub Flavored Markdown) is another popular specification based on CommonMark - maintained by GitHub, which is the Markdown mostly used. TOAST UI Editor follows both CommonMark and GFM specifications. Write documents with ease using productive tools provided by TOAST UI Editor and you can easily open the produced document wherever the specifications are supported.

  • Live Preview : Edit Markdown while keeping an eye on the rendered HTML. Your edits will be applied immediately.
  • Scroll Sync : Synchronous scrolling between Markdown and Preview. You don't need to scroll through each one separately.
  • Syntax Highlight : You can check broken Markdown syntax immediately.



  • Table : Through the context menu of the table, you can add or delete columns or rows of the table, and you can also arrange text in cells.
  • Custom Block Editor : The custom block area can be edited through the internal editor.
  • Copy and Paste : Paste anything from browser, screenshot, excel, powerpoint, etc.


  • Toolbar : Through the toolbar, you can style or add elements to the document you are editing. UI

  • Dark Theme : You can use the dark theme. UI

Use of Various Extended Functions - Plugins


CommonMark and GFM are great, but we often need more abstraction. The TOAST UI Editor comes with powerful Plugins in compliance with the Markdown syntax.

Five basic plugins are provided as follows, and can be downloaded and used with npm.

๐ŸŽจ Features

  • Viewer : Supports a mode to display only markdown data without an editing area.
  • Internationalization (i18n) : Supports English, Dutch, Korean, Japanese, Chinese, Spanish, German, Russian, French, Ukrainian, Turkish, Finnish, Czech, Arabic, Polish, Galician, Swedish, Italian, Norwegian, Croatian + language and you can extend.
  • Widget : This feature allows you to configure the rules that replaces the string matching to a specific RegExp with the widget node.
  • Custom Block : Nodes not supported by Markdown can be defined through custom block. You can display the node what you want through writing the parsing logic with custom block.

๐Ÿพ Examples

Here are more examples and play with TOAST UI Editor!

๐ŸŒ Browser Support

Chrome Internet Explorer Edge Safari Firefox
Yes 11+ Yes Yes Yes

๐Ÿ”ง Pull Request Steps

TOAST UI products are open source, so you can create a pull request(PR) after you fix issues. Run npm scripts and develop yourself with the following process.


Fork main branch into your personal repository. Clone it to local computer. Install node modules. Before starting development, you should check if there are any errors.

$ git clone https://github.com/{your-personal-repo}/tui.editor.git
$ npm install
$ npm run build toastmark
$ npm run test editor

TOAST UI Editor uses npm workspace, so you need to set the environment based on npm7. If subversion is used, dependencies must be installed by moving direct paths per package.


You can see your code reflected as soon as you save the code by running a server. Don't miss adding test cases and then make green rights.

Run snowpack-dev-server

snowpack allows you to run a development server without bundling.

$ npm run serve editor

Run webpack-dev-server

If testing of legacy browsers is required, the development server can still be run using a webpack.

$ npm run serve:ie editor

Run test

$ npm test editor

Pull Request

Before uploading your PR, run test one last time to check if there are any errors. If it has no errors, commit and then push it!

For more information on PR's steps, please see links in the Contributing section.

๐Ÿ’ฌ Contributing

๐Ÿž TOAST UI Family

๐Ÿš€ Used By

๐Ÿ“œ License

This software is licensed under the MIT ยฉ NHN Cloud.

*Note that all licence references and agreements mentioned in the TOAST UI Editor README section above are relevant to that project's source code only.