RadEditor – Telerik’s ASP.NET Editor

  • Familiar UI for rich-text content editing.
  • Accessible and XHTML-compliant output.
  • Out-of-the-box inline spell-checking.
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Overview

Use Telerik's feature-rich ASP.NET rich text editor, RadEditor, in simple web sites or CMS systems to provide WYSIWYG content-editing experience. Allow your end users to manage HTML/XHTML content utilizing the familiar Microsoft Word®-like interface for formatting text, setting hyperlinks, building tables, as well as inserting images, Flash animations, documents, etc. Leverage the large range of built-in tools, dropdowns, dialogs and system modules or take advantage of the multiple customization options.

RadEditor and 70+ other controls are part of RadControls for ASP.NET AJAX, a comprehensive toolset taking care of the common functionality of your application, while leaving you with more time to work on the business logic of the app.

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Key Features

Creating and Formatting Text, Paragraphs, Lists, Tables, and More

With Telerik's HTML editor for ASP.NET AJAX, you allow your users to painlessly create and format text using the familiar Bold, Italic, Underline, Justify, Indent, etc. buttons. Let them set different font names and sizes and text and background colors, as well as style existing HTML elements. Give them options to easily insert and format lists, tables, images, hyperlinks and form elements, as well as to copy existing formatting and apply it to other content elements with the familiar, MS Word-like Format Painter tool. Add predefined CSS classes to provide even more styling options or create your own custom tools, buttons, dropdowns or dialogs to meet your solution requirements.

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Easy formatting with Telerik's ASP.NET Text Editor
Hyperlink Manager settings in AJAX HTML Editor

Hyperlink and Image Managers

With Telerik’s leightweight ASP.NET Editor control, your users can insert and edit hyperlinks with ease thanks to the out-of-the-box Hyperlink Manager settings, such as text, target, tooltip, etc. Using the Image Manager the users can select an image from a library, preview it and change its properties, (size, position, alt text) or edit the image itself by cropping, rotating, etc.

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Document, Flash, Media and Other Managers

Your users can easily create new folders and upload new document files to your libraries thanks to the different file managers supported in Telerik's ASP.NET WYSIWYG rich HTML editor for AJAX: Document, Image, Flash, Media and Template Managers. They can easily embed YouTube or Vimeo videos in your HTML content via the Insert External Video dialog.

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Different managers in RadEditor
Format stripping options in RadEditor

Multiple Paste and Format Stripping Options

Eliminate the formatting issues your users face when pasting content into rich text editors. With RadEditor, they can choose the best for their need paste option out of the six available, including “Paste from Word”, “Paste from Word, strip font”, “Paste as Html”, etc. If for some reason they have content with undesired formatting, they can use one of the five format stripping options, including “Strip all formatting”, “Strip Word formatting”, “Strip CSS formatting”, etc.

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Inline AJAX Spell Check

RadEditor allows your users to spell-check the content they have written against their preferred language using the built-in spell checker. In addition to validating the content, the tool also allows adding new words to the dictionary. The spell-checker is cross-browser compatible.

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Spell-checking mode in Telerik's WYSIWYG Editor for AJAX

Accessible, XHTML Compliant Output

With Telerik’s Web Forms Editor, your users create accessible, cross-browser identical and XHTML-compliant content that meets the W3C and WCAG 2.0 standards. This is ensured by a few built-in content filters, system modules and an XHTML validator dialog.

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XHTML-Compliant RadEditor component

Design, HTML, and Preview Modes

Allow your end users to create and format content in design view with the help of RadEditor’s built-in tools, while your advanced users can work directly in the HTML mode. By using the Preview mode users can check how the content will be displayed when added to a real web page.

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Export to PDF, RTF and Markdown

Enable export to different formats, such as PDF, RTF and Markdown, with a single property or a call to a method. Predefine multiple styles like fonts and colors, page layout and sizes to tailor the content better to the specific export format.

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Telerik's advanced features of HTML Editor for AJAX

Statistics, Tag and Properties Inspectors and Real-time HTML Modules

Enable the statistics module to allow users to see how many words and characters of content they have created. Show the tag inspector to allow easier navigation through the HTML elements surrounding the text content or allow for real-time sync with the WYSIWYG content pane, just like in split mode for the markup files in Visual Studio. Enable the Properties Inspector for quick set up and fine-tuning of hyperlinks, images, tables, etc. while in design mode.

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Track Changes and Use Comments in Collaboration

Provide your end users with the option to keep track of their or their colleagues’ content changes, such as entering new, deleting or formatting existing fragments. Allow them to easily add comments in the content area of the RadEditor HTML editor. Changes and comments of different people are outlined with different colors.

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Multi-level Undo/Redo with Action Trails

Leverage the out-of-the-box undo-redo mechanism of Telerik’s WYSIWYG HTML Editor for AJAX, which we have extended to remember multiple commands in its stack with action trails just like in Microsoft Word®.

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Full Page HTML Editing

Give your users the option to edit full HTML pages, including the <html>, <head>, <title> and <meta> tags with the help of the Page Properties dialog. Add HTML templates to the Template Manager and give users the freedom to create full new pages on their own.

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Context Menus

Allow quick modifications of images, tables, paragraphs, and other elements with the help of RadEditor’s contextual menus displayed upon a right click of the item while in design mode.

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Different Toolbar Modes

Enable the best for your scenario toolbar view of the editor: Default (displaying the most used tools), PageTop, Floating, ShowOnFocus, Ribbonbar, RibbonbarPageTop, RibbonbarShowOnFocus, RibbonBarFloating. Except the Default and RibbonBar, all modes apply lazy loading for better performance and shorter loading time.

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Editor's Toolbar Views

Support for IFrame or Div Content Area

Depending on your scenario, choose iFrame or div for the editor content area. The iFrame mode is a separate document and does not inherit styles from the page it belongs to. The Div content area is part of the current page, which is better for https and cross-site scripting, as well as for compliance with more screen readers.

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High Level of Customization

Define your own content filters for content validation, specify which tools to be displayed in the toolbars or create your own command elements, be it buttons or dropdowns. Implement custom dialogs or load external ones. Even create your own file browser content providers to utilize different sources for the dialogs: database, cloud service, custom role-based CSM system, Web Service and applications which use URL rewriters.

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Rich Client-Side and Server-Side APIs

Manipulate the editor content and behavior thanks to the rich APIs and handle the user actions in an adequate manner. Change properties dynamically on the server and/or on the client, or execute custom code as a result of different events.

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Accessibility, Standard Compliance and Localization

Telerik’s ASP.NET Editor is XHTML-compliant and so is its output. WAI-ARIA and keyboard support, as well as right-to-left mode can be enabled with a single property. A separate component, AccessibleEditor, is isolated to provide higher accessibility level for people with disabilities and was selected by the Royal National Institute of Blind People for their new accessible website. Localize RadEditor to display messages in labels, buttons, dialogs and tooltips in any language using global or local resources.

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Accessibility and localization features

More ways the HTML Editor takes care of everything

Performance

RadEditor’s optimized performance is achieved through:

Built-in Skins

Use a single property to apply any of the twenty ready-to-use built-in themes, including an innovative mobile skin, to create a consistent look for your apps and save design and front-end development time. You can easily customize our existing skins or create your own with our

Visual Style Builder
Better user experience on touch devices with mobile-friendly RadEditor

Mobile Support

Why should you build a mobile version of your application when the same app can work equally well on mobile and desktop devices? RadEditor makes this possible by handling touch events in the same manner as those triggered by a keyboard or a mouse. In addition, the control comes with a mobile skin especially designed for better user experience on touch devices.

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Cross-browser Support

When using the control in your apps, you can rest assured that it behaves as expected and has a consistent look and feel in all browsers your users maybe be utilizing.

Read the full list of supported browsers
Consistency across browsers

Known Limitations

  1. RadEditor is using free third-party tools to provide RTF import/export with the following limitations:
    • Importing table elements, images and indentations from RTF to HTML is not supported;
    • Exporting underlined texts, background or foreground colors, as well as images from HTML to RTF is not supported.
  2. When StripFormattingOptions is set to “AllExceptNewLines” or "All" and ContentAreaMode is set to “DIV”, RadEditor does not strip formatting in Firefox/Chrome.
  3. "Undo/Redo" buttons do not work when ToolProviderID is set.

Works in

.NET Framework
3.5, 4.0, 4.5

Visual Studio
2008, 2010, 2012

SharePoint 2010, 2013

C# / VB.NET

Browser Support

  • Internet Explorer 6+
  • Mozilla Firefox 3.6+
  • Google Chrome 2+
  • Opera 10+
  • Safari 4+

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