Outlook 2013: Resize Large Image Attachments

Outlook 2013 allows you to easily resize large photo attachments before sending. This is also a cool way to use Outlook to resize large photos for yourself.

If you need to send a large image as an attachments in Outlook 2013, here’s a trick that allows you to resize it to a smaller size. This allows you to send the picture more quickly, and avoid company attachment size limits — believe it or not, some companies still have small attachment limits. Resizing the image will prevent you from getting bounce backs. This is also helpful if you need to resize an image for yourself. Here’s how to do it.

Quick Image Resizing in Outlook 2013

While this is a quick method of resizing images, you should know that it will only allow you to resize them to a resolution of 1024 x 768 pixels. This won’t give you the ultimate full quality of say a RAW image, it can still be which useful in a lot of situations.

Start by opening Outlook and composing a new message. Then click the Insert tab on the Ribbon, and then click the Attach File.

Outlook 2013 Resize Large Images Insert Attach

Find the image you want to resize and attach to the message.

Outlook 2013 Resize Large Images Insert Image

The next steps are the key for making this work. Once the image has been added as an attachment, click the File tab.

Outlook 2013 Resize Large Images File

You’ll see the following screen in the Info section. Select “Resize large images when I send this message” and click the arrow on the top right side to return to the Compose screen. Type your message and send it off.

Outlook 2013 Resize Images For Message

If you’re using this trick to resize the image for yourself, type your own email address and send it to yourself. After that, you can open the message from the Inbox or from Sent Items.

Outlook 2013 Resize Images Message

Once you open the message, you will notice that the image attachment is significantly smaller in size. In this example, I used a 5 MB image file and it’s been compressed down to only 136 KB. The only thing left to do is to right-click the name of the file and Save it wherever you want on your computer.

Outlook 2013 Resize Save Resized Image

If you’re sending the image to a business colleague they’ll be able to recieve it and check it out. Then if you need to send the original large RAW photo, you can use Dropbox, SkyDrive, or service like YouSendIt.



  1. examen de grado

    September 5, 2013 at 7:36 am

    Thank you for another informative site. Where else may just I am getting that kind of info written in such a perfect means? I’ve a project that I’m just now running on, and I have been at the look out for such info.

  2. woodelf

    November 8, 2013 at 11:37 pm

    Problem is most of the time Outlook 2013 does present you with that option under File > Info so you cannot rely on it.

    • Reality

      November 1, 2016 at 3:08 am

      It always shows once you have selected an image to attach.

  3. John S

    August 12, 2015 at 8:06 am

    But you only deal with attachments, not inserted images!

    There is a related FAR greater problem which is where the sender needs to illustrate a point midway through an email and therefore he/she *inserts* the images into the HTML email body.

    All works fine if the Windows “DPI” is set to 100% (96DPI) however for those of us with higher resolution screens, because Windows text is too small for us to easily read, we are effectively forced to increase Windows’s DPI setting to something larger. In my case 100% ==> 125% (120DPI).

    But users on Full HD resolution laptops often set it to 200%. This means any inserted image has both it’s height and width DOUBLED. And the extra pixels are created by physically blurring the image.

    Through unthinkable stupidity by Microsoft, Outlook has for many many years *physically* re-sized any images inserted into the body of the email if the Windows DPI is not 96 (and the image’s DPI setting is not DPI too).

    In my case it physically enlarges and BLURS all images by 25% the moment you press “Send” in Outlook. Yes, even Outlook 2013 still does this. And as far as I can tell there is no way of switching this ‘feature’ off. Utter nightmare.

    Any suggestions?

  4. Doris Livezey

    August 29, 2015 at 11:40 am

    This was helpful to reduce the size of the pictures (mine are 5-8 mb). However,while I was in the process of attaching the pictures in their large format, my Outlook 2013 only allows 2-3 pictures and then says the file size is too large. So I sent the message to myself and then forwarded it to myself with two more pictures added. I just did this 8 times in order to send 17 pictures. Very time consuming. Why are the people at Microsoft so annoying? The old format, you just clicked a little box on the right and said if you wanted the pictures to be small, medium or large. So simple.

    Can it be that my Yahoo browser is limiting the size? It never did previously.

  5. RON

    November 10, 2015 at 7:56 am


    • James

      December 14, 2015 at 4:14 am

      That’s because the size of your file are already at a small size, this is only for images with a lot more data.

      • Ron

        December 14, 2015 at 6:09 am

        I don’t think I made myself clear. The attachments are not photographs. They are scanned documents saved to a PDF file. How do I resize them? Or, how do I scan them to a smaller size?

        • Reality

          November 1, 2016 at 3:10 am

          Lol, there’s your problem Ron, you have no understanding of file types or what can be done with each program. You can’t just re-size a PDF in outlook. Also, this article is clearly about images, so instead of commenting on here in ALL CAPS, why not google for something like “how to resize a PDF”. Just a thought.

        • Reality

          November 1, 2016 at 3:15 am

          Plus, you’re asking about how to work your scanner, you’re all over the place. Get it together, you can’t just comment all of your troubles on one article which deals with a specific subject. You are the sort of person IT loathe. You wouldn’t do this to anybody else, you wouldn’t go to the dentist and start asking him about your foot pain, so what makes it acceptable when it comes to computers?

          Also, in your original comment, you actually use the words “IMAGE ATTACHMENTS”, which in our world does not include PDF files. Just because your PDF is a picture does not make it an image file. There you go, some free info, now go and learn how to use google.

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