You add keywords to HTML pages by including the Meta Keywords tag inside the Head section of the code. You then insert a list of keywords relevant to your business in the Meta tag.

How to Add Form Code to a WordPress Post. HTML form code offers an easy way to insert form items -- text boxes, radio buttons and checkboxes, for example -- to your WordPress site.

To add links to your Tumblr bio, you'll need to use a simple HTML code, which you can copy and paste in quickly.