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.

Want to search through / edit a scanned document on your Mac? Here's how to convert a scanned document into a searchable and editable PDF using Wondershare PDFelement.

If selecting to add a text box, you'll first be able to move the text box by dragging and resizing it as needed. Then you can tap into the text box to bring up the keyboard for entering text.

Did you know you can add a text box filled with color or a unique shape to your Google Doc? Here's where you'll find that feature in Google Drive.