Navigate to the page you want to add text to, and then select the Text icon (it looks like a "T" inside of a rectangle). A text box will then appear on the page.

Like other PDF readers, you select the text you want to add a comment on and select the Add Comment icon from the dialog menu.

To write on a PDF on Android, open the PDF file in the Adobe Acrobat Reader: Edit PDF app, and tap on the Text icon. Select where you want to input new text and type away.

How to Add a PDF Toolbar to Word. In some older versions of Microsoft Word, such as Word 2003, you had to add a toolbar to Word to convert documents to the PDF format. Word 2010, however, has ...

Adding emojis in text messages is relatively easy. Just open up your SMS messaging app, and at the bottom of the conversation where you input your text, look out for a smiley face icon.

In other words, Adobe Reader won't let you add text. What you need is a program that's a little more accommodating, PDF-wise. Try Foxit Reader 4.3, which allows you to add text to any PDF.

The best PDF editors let you do even more with PDF files, from marking them up to making changes to the text and images they include.

You can add text, arrows, circles, rectangles, and more. To customize these annotations, click the appropriate icon on the menu above the document.

Microsoft Edge provides a feature to highlight text in PDF and save highlighted PDF to your PC. This post shows you how to to highlight and save PDF using Edge.

Whether you're on an iPhone, Android phone, Mac or PC, I found free and easy ways to add text, sign documents and fill out forms.