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Queen's University
 

Winter 2011 Newsletter


Size Does Matter: Batch Reducing Many Images

In ITServices Fall 2010 Newsletter "Tech Tip", readers were presented with instructions on how to resize a single image using Photoshop. Resizing images to make them smaller allows you to send them to friends as email attachments without the email bouncing back to you because the image was too large.

 

But what if you have a lot of very large images that you would like to upload to a web site or import into a document? It would be very time consuming to reduce them, one at a time!

 

This article demonstrates how you can resize multiple images all at once using Photoshop.

 

Step 1. If you have a lot of pictures that you want to resize you can do this through Bridge in a batch. Launch Bridge from within Photoshop by clicking on the bridge button "Br" as illustrated in the picture below with the red arrow.

 

Image at the top of the screen in photoshop displaying how to launch the bridge by clicking on the button titled br

 

Step 2. Navigate to the folder where the pictures you want to resize are located.

 

Image showing the folder selection of the folder where all of your pictures are stored that are to be resized.

Step 3. Select the pictures you want to resize (hold down the Ctrl key and click on individual pictures or press Ctrl A to select all pictures in the folder.). Once all of the pictures that you want to resize have been selected, go to the top of the window and select Tools > Photoshop > Image Processor. This will bring you back to Photoshop with the following dialog box displayed. Follow the selection instructions indicated in red and marked from Ato E.

 

Image marked with red letters A to E showing how to set up the folder where all of your resized images should be saved.

 

 

 

Selection Instructions for Image Processor Dialog Box

Creating the folder for your smaller images


A- Select this Radio button.
B- Press Select Folder then navigate to where you want the

folder located.
C- Press the Make New folder button.
D- Type in the name you wish to call the new folder.
E- Press the "OK" button.

 

 

 

 

 

 

Step 4. The Image Processor dialog box displayed below is presented next. Follow the selection instructions indicated in red and marked from Ato Eto create the new image dimensions for your pictures.

 

Image marked with red letters A to E showing how to select new image dimensions for all your selected images.

 

 

 

Selection Instructions for Image Processor Dialog Box

Creating smaller images


A- Make sure "Save as JPEG" is checked.
B- Click the "Resize to Fit" check box.
C- Enter the new Height and Width dimensions for your images to fit into.
D- Change the quality.

Note: The higher the quality number the better the quality and the larger the
image file; the maximum quality number is 12.
E- Press the "Run" button. Photoshop will open and close your pictures as they are resized.

 

 

 

 

 

Congratulations. You have just resized all of your selected images.  You will now have a smaller version of the original images saved in the new folder you created as part of Step 3.

 

 

 

 

 


 

 

 


 

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