Schoolzine Image ReSZizer for Mac

The Logo for ReSZizer

Before uploading your newsletter content, we recommend first reducing the file size of your images by processing them through the Schoolzine Image ReSZizer. This will cut down on the time it takes to upload your files.

You will also be able to adjust the height and width of your images to fit various other features within the Control Centre, such as Side Panels, Emails, Websites and SZapp Notifications.

This software is free and allows you to resize all of your images at the same time.

Installing the ReSZizer

You can install the application in the Desktop App Store by searching for ReSZizer, or by clicking the link below:

Click here to install the ReSZizer

PLEASE NOTE: If you are having trouble installing the Image ReSZizer due to administration access permissions, you will need to speak to your I.T. Department.

Processing Your Images

Click on the video below to view a video tutorial on using the Schoolzine Image ReSZizer:

Before you get started, make sure your Images folder contains all relevant image files and galleries.

The ReSZizer will save the resized images over the top of the original files, so if you think you will need the original images later, save a copy of these files to another folder.

The Schoolzine ReSZizer on Mac

  1. Open the ReSZizer application.
  2. Choose the files you wish to resize by clicking the Folder button at the top of the ReSZizer and navigating to your Images folder, then click Open.
    Note: You can also Click and Drag your Images folder into the box labeled ‘Drag Images Here’.
  3. To resize a single image, or to select images individually, click the File button at the top of the ReSZizer.
  4. Set the Profile.
    Note: Standard is the default setting and perfect for resizing images for your newsletter content.
  5. Click Process.

Handy Hints

You cannot resize PDF or video files. The Image ReSZizer is for image files only.

Make sure you run your images through the Image ReSZizer before zipping the folder.


You are able to control what dimensions your images are sized to by assigning a Profile before you click Process.

  • Standard – 600px width.
    Note: This is the Profile that you will set if you are resizing images to fit into the content of your newsletter.
  • Gallery – 600px height.
  • Side Panel – 220px width.
    Note: This is the Profile you will set if you are resizing images to fit into the Side Panel of your newsletter.
  • Design – 2000px width.
  • Newsflash – 500px width.
    Note: This is the Profile you will set if you are resizing images to fit into an Email Newsflash.

Images Showing as Wrong Orientation

Images contain certain background information known as Meta-Data that control varying aspects of the image, such as Size, Rotation, Preview Text, etc. Both your Desktop Computer and online platforms such as the Schoolzine Control Centre can interpret this background Meta-Data in different ways. This can lead to images being the correct orientation on your desktop computer but display incorrectly once uploaded online.

How can I resolve this?

You can use the Schoolzine Image Resizer to reset the Meta-Data of your images. Simply make sure they are the correct orientation on your Desktop Computer, then run them through the Schoolzine Image Resizer. Even if your images have been resized previously, this will reset the Meta-Data to the correct Orientation.

I have used the Schoolzine Resizer to reset the Meta-Data, but the images are still the wrong orientation.

Occasionally the Meta-Data can be locked onto the image and the Schoolzine Image Resizer is unable to reset it correctly. To resolve this you can follow the below steps:

  • Add the image into some sort of image editing software
    (ie Adobe Photoshop, Microsoft Paint, etc)
  • Rotate the image to the incorrect orientation
  • Save the image
  • Rotate the image back to the correct orientation
  • Save the image

This should Hard Reset the Meta-Data on the Image and set the Orientation to the Correct Orientation.

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