Browser Compatibility:

safari firefox ie chrome opera mozilla netscape

RichTextEditor control will automatically determine the browser that has requested the page and render the appropriate solution for that browser. However, some control features cannot be rendered on older browsers.

Uplevel Browsers

Browsers are split into two distinctive groups: "uplevel" (newer versions) and "downlevel" (earlier versions). Uplevel browsers are defined as IE 10.0, IE 9.0, all Internet Explorer versions from 6.0 up on Windows, Firefox 2.0+, Chrome, Mozilla 1.3+, Netscape 7+, Opera 9.x and Safari (1.3+). This includes Macintosh and Linux. RichTextEditor will render rich UI in uplevel browsers.

Windows (all) Mac OS X/Linux/Unix

Internet Explorer 10.0
Internet Explorer 9.0+
Internet Explorer 6.0+
Firefox 2.0+
Netscape 9.0
Opera 9.x
Safari 2.0+

Firefox 2.0+
Netscape 9.0
Safari 2.0+
Mozilla 1.4+
Or any browser based on Mozilla 1.4+

Downlevel Browsers

Downlevel Browsers are split into different groups as well. By further determining browser capabilities, RichTextEditor may render as simple UI, BBCode Editor, Mobile UI(iPad, iPhone, Android) or a regular textarea.

Render Mode Browser Capabilities
Mobile UI Browsers of iPad, iPhone, Android or other mobile devices.
Simple UI Browsers(IE 5, Firefox 1.0, Netscape 7.1, Safari 1.3, Netscape 7.1) have basic WYSIWYG support.
BBCode Browsers support Javascript.
Textarea None of the above.

Keep in mind that you don't need a supported browser to see HTML pages generated using Rich Text Editor, you just need a supported browser to edit with Rich Text Editor.

Rich Text Editor is pure JavaScript and HTML in the browser, it requires no browser plug-ins, ActiveX controls or Java Applets.


Component Supported Type
Operating System Windows XP Professional, Windows 2000 Professional, Windows Server 2003, Windows Server 2008
Framework Microsoft .NET Framework 2.0, 3.x and 4.x


You can use any text editor to set the required properties of the control and to implement it in your pages.

Below is a list of the most commonly used editors:

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