PDFs are usually viewed in programs without PDF-editing tools. Given that fact, creating a PDF with editable fields lets you create forms that are resistant to tampering or inadvertent alteration ...

Adobe Acrobat has a free online PDF form filler tool that lets you fill out PDF form fields, add text boxes, checkmarks, circles and other symbols.

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.