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How to Add PDF Attachment

If you are a student, you must have written papers at different career points. At the same time, you always take data or reference content from other papers when writing a paper. Sometimes it becomes tough to add attachment to PDF of the reference page. Here comes the need for a PDF attachment tool that is used to easily attach a document to a PDF.

Part 1. What is PDF Attachment?

Attachment is an external file that we can attach to a PDF so users can visit that attachment for more detail and understand that particular point. This external PDF attachment can be of different forms, such as Word Document, Excel Sheet, PowerPoint Presentation, Link, or any other medium. It is widely used in the academic world to support any point's proposition by providing external data.

You can also choose a different color for your attachment. The color that you choose will be reflected in the attachment frame. It is quite easy and simple; let us guide you on how to add attachment to PDF following sections.

Part 2. How to Add Attachment to PDF on Windows

Adobe Acrobat is software that enables the user to attach a PDF file and other types of document files to PDF. This software gives you various options for attaching a particular file to an opened PDF file.

Whether it is a Doc, Excel, or Audio file, you can easily attach it to your PDF file using Adobe Acrobat in the comment mode. To add attachment to PDF by using Adobe Acrobat on Windows, you can follow the steps explained below:

Step 1: Once the app is launched, click on the “My Computer” option from the left panel. A new window is open, and you will see the option of “Browse” you can import your desired file by clicking on that “Browse” button.

open pdf in adobe acrobat

Step 2: Once the file is imported, you can open the “Comment” tool from the right-side panel to add attachments.

add attachment to pdf

Step 3: After opening the “Comment” tool, click on the option of adding a new attachment and select the “Attach File” option. Now select where you want to do the attachment on Adobe Acrobat.

how to add attachment to pdf

Step 4: When the file is attached, you can select and change different properties of the attachment from the property menu, such as icon, color, and opacity.

how to attach file in pdf

Part 3. How to Add Attachment to PDF on Mac

An all-in-one PDF tool for devices like Mac, Foxit PDF Editor, is an easy-to-use and flexible PDF tool. This minimalistic software includes automatic detection of the font, opacity, and text size on a particular PDF file.

Moreover, it allows you to edit and place images in the opened PDF file. Not only that, but this software also comes with multiple features, including the addition of hyperlinks/files, redaction of sensitive/hidden data, reduction of file size, etc. In order to know how to add attachments in PDF using this software, you are required to follow a set of steps:

Step 1: The first step requires you to open the Foxit PDF Editor on your Mac and click on the “Open File” button from the left panel. Now, browse the PDF from the Mac drive and open it in the editor.

add attachment in pdf mac

Step 2. After that, access the "Comment" tab from the toolbar of the Foxit PDF editor to attach a file to the PDF.

Step 3: For adding a file attachment to the PDF, click on the “File” tool from the “Comment” tab. Now, you have to pin on the PDF where you want to add the file. You will be asked to browse and import the file for attachment.

attach file to pdf mac

Part 4. How to Attach Files in PDF Online

PDF files can be opened, edited, and saved online using pdfFiller. It is an online PDF managing platform that can be accessed from anywhere and on any device. You can manage, edit, import, export and fill out any PDF file you want using pdfFiller.

It offers multiple PDF importing features, such as you can import your PDF from your email or you can request from anyone as well. Using pdfFiller, you can insert infographics into your website without doing any coding. It's easy and saves time. You can follow the steps below to attach documents to PDF online:

Step 1: The first thing you have to do is upload your desired file by opening the pdfFiller attachment tool on your browser.

pdf attachment online

Step 2: Once the file is uploaded, select the “Text” tool from above and double-click on the text on which you want your link or file to be attached to.

Step 3: Now click on the “Attachment” icon to attach the link to the selected text and export the PDF by clicking on the “Done” button.

how to add attachment in pdf

Part 5. FAQs for PDF Attachment

1. Why is the PDF attachment not opening?

The attachment that you added as a link is broken; that is why it is not working. You have to manually check whether the page is available or not because sometimes the websites delete some of their content or change their URL.

2. How can I tell if a PDF has attachments?

There are only two methods that you can use to know if PDF has an attachment. An attachment icon will be shown across the PDF file, or the text will be underlined across which the attachment link is added.

3. How do I open attachments in PDF?

In some PDF editors, you have to single click, and the attachment will open, while in some PDF editors, you have to double click on the attachment to open.

4. Why can't I email my PDF file?

This issue can arise due because email clients have restriction over the size of the PDF files or the antivirus of your computer have detected any virus in the PDF file.

5. How do I change PDF attachment settings?

You can change the attachment settings in some PDF editors by clicking on the attachment. However, in some other PDF editors, you can change PDF settings by right-clicking on the attachment and clicking on the “Properties” option from the drop-down menu.


The offline tools that are mentioned above are easy-to-use PDF applications for adding & creating attachments in PDF on Windows and Mac. These software are not limited to adding the attachments to the PDF, but you can also use these software to annotate or edit the PDF files. We also recommended a PDF attachment online tool to add links inside the PDF file without downloading any software.