Step-By-Step Instructions for Resizing an Image to Send via an Email

How to downsize a large image on a PC or Mac

Blank photo frames lying on a brick floor

pbombaert / Getty Images 

Email providers place restrictions on the amount of data you can include in a single message. Thus, trying to send large image files can sometimes result in an error message. If you want to resize a JPEG for an email, you have several options. Most of the image resizers applications that you can download from the internet work in a similar manner.

As an alternative to sending a large image as an attachment, you can use a free image hosting site to store it online. Just include a link in your email so that the recipient can view the image in their browser.

How to Resize Pictures for Email With Image Resizer for Windows

Image Resizer for Windows is free to download. To downsize a large image using the application in Windows:

  1. Download and install Image Resizer for Windows.

  2. Right click on one or more picture files on your computer.

  3. Select Resize pictures from the menu that appears.

    Select Resize pictures from the menu that appears.
  4. Select one of the preconfigured sizes, or indicate a custom size and enter the desired dimensions.

    Select one of the preconfigured sizes, or indicate a custom size and enter the desired dimensions.
  5. Select Resize.

How to Resize Images for Email Using Preview on a Mac

The Preview application ships on every Mac computer. To downsize a photo on your Mac:

  1. Launch Preview.

  2. Drag-and-drop the image you want to resize onto the Preview icon.

  3. Click Show Markup Toolbar next to the search field.

    You can also open the markup toolbar with the keyboard shortcut Command+Shift+A.

  4. Click the Adjust Size button on the markup toolbar. It resembles a box with two outward facing arrows.

  5. Choose one of the smaller sizes from the Fit Into drop-down menu. You can also select Custom and enter the dimensions you prefer.

    When entering custom dimensions, make sure Scale proportionally is checked to maintain the original proportions.

  6. Click OK to save the change.

Online Image Resizers

Although Image Resizer for Windows is easy to use and gets the job done quickly, online image resizing tools offer similar features for people who don't want to install a program. Check out the following resources: