How to Change the Font Size in a PDF Form Field. Portable Document Format, or PDF, documents allow users with different operating systems, fonts and programs to view a file.

This post helps to add a text box to PDF using a free software and an online tool. You can adjust the size of text box, text style, etc.

When you're presented with a PDF form, the options for adjusting the size and style of the text are often limited. If you want to change the font in Adobe Reader, you might not find the solution ...

Click the text icon to change the font, size, alignment, or style of added text. To change the text color, click the color box on the upper right side of the font box. A color palette will pop down.