How to Change the Resolution of a GIF Fileby TS Jordan
A file's resolution is the number of horizontal and vertical pixels contained within an image, expressed in a format such as 1024x768. To crop a GIF image, changing the resolution may be necessary, forcing it to fit within a specific area or expanding the image to allow you to add additional content. This can be done with the photo-manipulation tools of your operating system.
Click the Start menu at the bottiom of your screen, and select "All Programs."
Click "Accessories" and select "Paint."
Select the File menu, click "Open," and click on the GIF image to be resized.
Click "Image," select "Attributes," and enter the new resolution of the image by Width and Height.
Save the revised GIF file with a new name.