Portable Document Format files or PDF files are a godsend in the world of document creation. They are portable and can save you a ton in terms of enabling the exchange of files with others and ensuring the information contained in a file is secure at all times.
Although PDF documents are shareable, only the author can make changes to the data in the file and allow the audience to share their thoughts and ideas by adding comments on the file for the author’s review.
In this article, we seek to answer your queries and discuss the following ways you can add comments on your PDF file:
- What are the different ways of adding a text comment on PDF?
- Can I add an audio comment on PDF?
- How can I add a file attachment comment on PDF?
- How can I add a stamp comment on PDF?
- How to add an image attachment on PDF.
What are the different ways of adding a text comment on PDF?
There are several ways you can add a comment on PDF using a PDF editor like Adobe Acrobat. You can choose to comment using:
- Sticky Note
- Text Selection
- Text Tool
- Drawing & Markup Tools
How To Add A Comment on PDF Using a Sticky Note
The sticky note is a preferred option for many Adobe users when adding a comment on PDF. It is easy to locate as it appears as a speech balloon even when closed on the exact position you’ve placed your comment on the document.
When you click on the sticky note icon the first time, it brings you a text box where you can input your desired comment. If you wish to edit your comment later, you can double click on the sticky note to bring up the text box again, then edit your comment.
You can see the comment you add on a sticky note by hovering your mouse pointer on the icon. A sticky note also allows you to change its position on the document by clking and dragging it to your desired position. You can also adjust the properties of your sticky note to make it more visible if you so wish.
You can add a sticky note comment on pdf by:
- Open your PDF file. The comment toolbar should appear automatically at the top of your screen.

If not;
- Go to the View menu on your screen, select Tools > Comment > Open
- Once the Comment bar is open, select the Sticky Note icon
- that appears first on the list of options.
- Click and drag the sticky note icon to the place on the document where you want to add a comment.
- Please type your comment and post it in the box that appears.
How To Add A Comment on PDF using Text Selection Tools.
Adobe offers you many tools you can use to select the section or text in your document you wish to comment on. Text selection allows the specific section in the document to pop out for the reader to notice quickly. The available options for text selection include:
Highlight Tool
The highlight tool makes your select text stand out by coloring the background of the text yellow as a highlighter pen does.
- On the Comment Bar, select Highlight Tool.
- Click on and drag the Highlight tool on the specific text you wish to comment on.
- Type your comment on the pop-up window that appears on the right side of your screen.
Strikethrough Tool
This tool places a horizontal line through the center of your selected text to make it stand out.
- On the Comment Bar, select the Strikethrough Tool
- Click on and drag the Strikethrough Tool on the text you wish to comment on.
- Type your comment on the pop-up window on the right side of your screen.
Underline Tool
This text selection tool draws a zigzag line under the text you wish to comment on.
- Select Underline Tool on the comment Bar.
- Click on the Underline Tool and drag it over the text or section you wish to comment on.
- Type your comment on the pop-up window that appears on the right side of your screen.
Replace Text Tool
This tool allows you to select the specific text or section you would like to replace on the PDF file.
- Select the Replace Text Tool on the Comment Bar.
- Click on and drag the tool on the select text you would like to replace.
- Type the comment or text you would like to replace the original with on the pop-up window that appears.
Add-In Text Tool
This tool allows you to suggest additional text on a particular section of the PDF file.
- Select the Add-In Text tool.
- Click on the specific section where you would like to add in text.
- Type your comment or text suggestion on the pop-up window that appears on the right side of the screen.