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.

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 ...

Text You can also add text on top of the content and change the font, size, and style of the text. This can be used, for example, to fill in a form that has not been made truly fillable.

Sometimes the most obvious answer is also the correct one, as is the case when it comes to using Adobe Acrobat to edit PDFs for free.

Need to edit a PDF document but don’t want to pay for the more expensive Adobe editors? You can add text to and sign a PDF with just the free Reader program.

To see alt text in a completed PDF document, you'll need to use a screen reading app, which is an accessibility tool for visually impaired users.