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Are you frustrated because you can't open PDF in Outlook? That's a huge problem if you really need to send the file and the deadline is approaching. Believe it or not, the solution is quite simple. You just need to reduce the PDF file size. You can achieve that through compression, which you can do using a tool like Wondershare PDFelement.

In this article, we will discuss 3 different ways that will let you open PDFs in Outlook. Furthermore, you'll learn other uses for Wondershare PDFelement.

In this article
  1. What To Do If You Can’t Open PDF in Outlook?
    1. Compress the PDF
    2. Merge the PDFs
    3. Create Shareable Links
    1. PDF Editing
    2. Organize Pages
    3. Email
    4. Convert

Part 1. What To Do If You Can’t Open PDF in Outlook?

Email service providers typically have a file size limit for attachments. In Outlook, the limit is 20 MB. Thus, you can't open some PDFs in Outlook. That reveals the solution to the problem. You have to reduce the size of the PDF. Is it possible? Yes, it is possible through PDF compression.

Enter Wondershare PDFelement, a feature-rich and cost-effective PDF solution. It offers a PDF Compression tool with different compression levels. This gives you some control over how much smaller the output will be.

On top of that, Wondershare PDFelement has Merge, Split, Extract, and Share features that you may also find useful. The Merge tool lets you combine multiple PDFs into one. Then, you can compress the output to reduce the file size. Meanwhile, the Split and Extract features let you take the only important parts in a PDF, resulting in a smaller file size.

Part 2. How To Attach Large Files to Outlook Using Wondershare PDFelement

In this section, you will learn how to use Wondershare PDFelement to reduce the size of PDFs that you can't open in Outlook.

Method 1. Compress the PDF

As mentioned above, when you are unable to open PDF from Outlook, the first thing to try is to compress the PDF. Reduce the file size until it is 20 MB or less. In this section, we will discuss how to use Wondershare PDFelement's Compress PDF tool.

  1. Launch Wondershare PDFelement.
  2. Click Compress PDF.
compress pdf feature of wondershare pdfelement
  1. Click Add Files.
compress pdf window wondershare pdfelement
  1. Select the PDFs that you can't open in Outlook.
  2. Choose between High, Medium, and Low compression levels. The higher the level, the smaller the output will be.
selecting a compression level
  1. Click Apply.
  2. Open the compressed PDF in Outlook.

Method 2. Merge the PDFs

Suppose you need to send multiple PDFs that are related to each other. You can combine these PDFs using Wondershare PDFelement. Then, you can compress the output. Alternatively, compress the individual PDFs before combining them. Here is how to combine then compress PDFs with Wondershare PDFelement.

  1. Launch Wondershare PDFelement.
  2. Click Combine PDF.
combine pdf feature of wondershare pdfelement
  1. Click Add File and add the PDFs that you want to send using Outlook. Alternatively, drag and drop the files into the input box.
combine pdf window in wondershare pdfelement
  1. Optionally, check the box for Add a new table of content page generated from bookmarks.
  2. Add a file name for the output and select a destination folder.
  3. Click Apply.
combining multiple pdfs using wondershare pdfelement
  1. Back at the Wondershare PDFelement main menu, click Compress PDF.
  2. Click Add Files. Select the merged PDF.
  3. Select a compression level.
  4. Click Apply.

After this, you should not have the problem where you can't open PDF from Outlook.

Method 3. Create Shareable Links

You can also just accept that Outlook cannot open PDF attachments if they are too large. But that does not mean that you should give up on sending the file through Outlook. There is a way that does not involve actually adding the PDF to the email.

In this method, you will upload the PDF to a cloud storage. Then, you will create a shareable link that you can send to others. Here is how to do that using Wondershare PDFelement and Wondershare Document Cloud.

  1. Open the PDF using Wondershare PDFelement.
  2. Click File > Save to Cloud > Document Cloud.
save to cloud option in pdfelement
  1. Click Upload.
uploading pdf to wondershare document cloud
  1. Open a web browser and go to Wondershare Document Cloud. Log into your account.
  2. Click Document > Your Documents.
finding the pdf in document cloud
  1. Click the three dots at the right of the PDF.
  2. From the dropdown menu, click Share.
share option in wondershare document cloud
  1. In the pop-up window, click Create Link.
creating a shareable link
  1. Paste the link into your Outlook email.

Part 3. What Else Can Wondershare PDFelement Do?

Wondershare PDFelement is a well-loved PDF solution. It is not only feature-rich but also affordable. Indeed, it is the most cost-effective PDF solution out there.

So, what does Wondershare PDFelement offer that can help facilitate document management? Let's have a deep dive.

PDF Editing

edit pdf feature of wondershare pdfelement

Wondershare PDFelement is, first and foremost, a PDF editor. It lets you edit the existing text, images, and links in the PDF. Furthermore, Wondershare PDFelement lets you add new text, images, links, watermarks, backgrounds, and more!

Organize Pages

organize pages feature of wondershare pdfelement

Wondershare PDFelement also lets you organize the pages of a PDF. How does this help with the issue where you can’t open PDF in Outlook? Wondershare PDFelement has an Extract and a Split feature. The former lets you extract certain pages from a PDF and turn them into their own file. Meanwhile, the Split feature lets you break a PDF into two. There is a handy setting that lets you split PDFs by file size.

Email

email feature in wondershare pdfelement

You do not have to save a PDF and then open Outlook to send it to others. From within Wondershare PDFelement, you can open Outlook through the Email feature. This automatically opens Outlook, composes a new email, and attaches the active PDF.

Convert

convert pdf feature of wondershare pdfelement

Wondershare PDFelement also allows you to convert different files to PDF. For example, you can open Word, Excel, and PowerPoint files directly using Wondershare PDFelement. The program instantly turns them into PDFs. Likewise, you can use Wondershare PDFelement to convert PDFs to other formats.

Conclusion

If you can't open PDF in Outlook, the first thing that you need to do is make it smaller. That can be achieved through file compression. Alternatively, you can upload the file to a cloud storage and send a shareable link instead. Regardless of the method you choose, Wondershare PDFelement can help. It offers a PDF compressor, can upload files to cloud storage, and has Outlook integration.

Wondershare PDFelement now also has an Outlook plug-in. It lets you create PDFs or open PDFs in Outlook. Indeed, these features make it easy to create and share PDFs via Outlook emails.

People Also Ask

  • 1. What if I still can’t attach a PDF on Outlook even if I have reduced the file size?
    The best thing to do is to upload the PDF to a cloud storage. As discussed above, you can use Wondershare PDFelement to upload the file to a cloud storage service. Alternatively, you can split the PDF into smaller parts.
  • 2. Does the PDF viewer I’m using have an effect on the issue?
    They could have an effect. For example, certain Outlook problems related to PDFs are connected to outdated Adobe Reader. That said, if none of the solutions above worked for you, try changing your PDF reader. Wondershare PDFelement is your best choice, as it is cheap and user-friendly.
  • 3. What do I do if I can’t open a PDF sent to me through Outlook?
    There are many things you can try to solve this. You should try reinstalling Outlook or updating your Windows. You could also try setting a reliable PDF tool like Wondershare PDFelement as your default program. If nothing worked, ask the sender to send the PDF again because the file you're trying to open may be corrupted.
Audrey Goodwin
Audrey Goodwin May 22, 24
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12 years of talent acquired in the software industry working with large publishers. Public speaker and author of several eBooks on technical writing and editing.