CKEditor online editor in Browser

CKEditor is an online WYSIWYG editor that is used to edit HTML documents (or their fragments) in the browser.

So what does this mean?

• The "online" part means that CKEditor works in a web browser (like Firefox, Chrome, Internet Explorer or Safari). It is thus not a standalone program that can be installed on your computer and then opened as a desktop application.
• The "WYSIWYG" part means that when you use CKEditor, you can style the text and add rich media contents to your document in real time by using the editor UI (toolbar buttons, dialog windows), and the result will be seen immediately. If you click the Bold button, the text will become bold; when you add an image, it will appear straightaway.
• CKEditor works on HTML, which is a markup language used to create web content. The huge benefit that CKEditor gives you, however, is that you do not need to see the HTML code directly nor understand its intricacies. The editor is sort of an intermediary here — it hides the HTML code from you and lets you just work the WYSIWYG way.
• The "edit HTML documents" part means that the editor can be used to edit any HTML content, like website content (blog articles, blog comments, forum posts), e-mails, or things that you write in web forms. That is not all, however: CKEditor can also be used in all sorts of online applications, i.e. all those that use HTML as their source text format and are run in the browser!

for more info https://docs.ckeditor.com/ckeditor4/docs/#!/guide/dev_installation

Thanks,

Bhaskar