Increasing or decreasing the size of the text in your operating system or Web browser can be tricky, but our easy guide walks you through it.

Fortunately, Tumblr enables you to change the font size for your blog's text by giving you direct access to the raw CSS or Cascading Style Sheet code of your theme.

How to Change Body Text Font on Tumblr. Tumblr's Customize page can be used to make basic changes to your blog, including title, description and links. While this page enables you to customize ...