How to Write in a PDF With a Mac

By Art Corvelay

A PDF, or Portable Document Format, is a proprietary publishing format developed by Adobe. According to PC Magazine, this format has become widely used to share documents over the Internet. You may want to be able to write in a PDF file in order share editing comments with someone. Mac computers come with a document viewer called Preview. This document viewer allows you to write in a PDF file in two distinct ways. First, you can write directly on top of the PDF file. You can also add an annotation, or sticky note, to a PDF file using Preview.

Write Directly on a PDF

Step 1

Open a PDF file in Preview. To do this, press "Control" on your keyboard and click the PDF file. Select "Open with" and then select "Preview."

Step 2

Click the "Tools" tab at the top of your screen. Select "Annotate" and then "Add Text." An empty text box will appear on top of the PDF file.

Step 3

Re-size the empty text box to the desired size. To do this, click and drag at the corner of the text box to expand or reduce the size of the box.

Step 4

Write a message inside of the text box. The text will appear directly on the PDF file.

Step 5

Save the file to make sure your text is saved. Click "File" and then "Save as" to save the file.

Annotate the PDF

Step 1

Open a PDF file in Preview. To do this, press "Control" on your keyboard and click the PDF file. Select "Open with" and then select "Preview."

Step 2

Click the "Tools" tab at the top of your screen. Select "Annotate" and then "Add Note."

Step 3

Click anywhere in the PDF file you want to annotate and a yellow sticky note will appear.

Step 4

Write a message in the sticky note. When someone else opens the PDF file, he can click on the annotations and view your comments.