Resizing Images




The below software can be used to resize image files.



Windows Image Resizer-  Image Resizer

  • Image Resizer will install as part of Windows
  • Right-click on picture
  • Select "Resize Picture" (640 X 480)
  • Automatically resizes picture and ready to use


*Preview does not require downloading any software

Place all images in a folder or on the desktop

  • Right-click on the images, or command click to view this display window
  • Hover over "Open With"
  • From the drop-down select "Preview"

  • Select "Adjust Size"

  • From drop-down select 640 X 480
  • Width and Height pixels
  • Resolution 72 
  • Click OK

  • File Save



Download the free software JPEGmini App from the Mac App Store

Using the App:


If you have ever sent or received photos via email or attached them somewhere on the web, you know that image size can be a problem. Some websites only allow small images so they load faster and consume less memory, and getting an email with a huge image can be very annoying.  This is why we "resize" our images.  The aim of optimization is to reduce the time it takes to access a website (or run a program).

The time it takes for a webpage to display is affected by a number of factors:

  • number (and filesize) of images used on the webpage
  • structure of the underlying XHTML code, for example; setting height and width attributes enables the browser to reserve the correct amount of space for an image (before it has downloaded) avoiding the browser redrawing the webpage
  • browser’s rendering engine (how the program is used to access the web loads on each webpage)
  • browser caching: if the webpage, images, stylesheets, etc. are stored locally they do not need to be downloaded
  • user’s connection speed (i.e. dial-up modem will take longer to download a webpage than a cable modem)
  • speed of the server hosting the website
  • Internet traffic