How to Open the HTML File in Plain Text Mode Using TextEdit

Open the HTML file using TextEdit in Mac/OS will render it in the rich text format by defaut. If you would like to view the HTML tags or edit it by typing your own HTML statements, you need to open it in plain text format. To open in plain text form:

1. Click on Preferences
2. Select the Open and Save
3. Click on 'Ignore rich text commands in HTML files

 This is why many developers prefer to use gedit from GNOME as a text editor