PowerPoint displays presentations using fonts installed on your system. Sometimes those fonts are not available when others view the presentation online. You can set which fonts to substitute in a Web presentation when needed. You can choose from proportional and fixed-width fonts.
Proportional fonts have letters that use varying widths. In a fixed-width font, every letter has the same width.
Specify Fonts for Web Presentations
1 In the Save As dialog box, click here and select either Single File Web Page or Web Page.
2 Click Publish.
The Publish as Web Page dialog box appears.
3 Click Web Options