You can use the Rich Content Editor to embed content using HTML. The Rich Content Editor is used in features that support the editor (Announcements, Assignments, Discussions, Pages, Quizzes, or Syllabus).
When attempting to do custom HTML coding in Canvas, you may discover that certain HTML codes do not work upon saving. This is because Canvas will only support certain HTML elements for security reasons. This also applies to content copied and pasted from an external source. Below is a link to a list of HTML tags that are permissible in Canvas. HTML tags that are not on this list may be stripped out of the Canvas Rich Content Editor when you save your work. View the Canvas HTML whitelist PDF for more information.
Open Rich Content Editor
Open the Rich Content Editor using one of the Canvas features which support the Editor.
Open HTML Editor
Click the HTML Editor link.
Note: When in HTML view, you can toggle back by clicking the Rich Content Editor link.
Click the Save button.
Note: When using the Rich Content Editor in Discussions, the Save button may appear as the Post Reply button.