How to Adjust Pixels Using Picasa
Images on a computer are made up of pixels. Each pixel is a single point of color in the image. Larger images contain a larger amount of pixels, and smaller ones contain a smaller amount. You can adjust the pixel size of an image to shrink it. Google's Picasa photo management application allows you to adjust the size of an image and specify an exact size in pixels while exporting the image. Picasa creates a new image that is as many pixels high or long as you specify.
Select an image in Picasa by clicking it.
Click the "File" menu and click "Export Picture to Folder."
Click the "Browse" button in the Export dialog that appears, select the folder you want to save the resized image to and click "OK."
Click the "Resize To" option in the Image Size section.
Type an exact number of pixels into the "Pixels" box or click and drag the slider to the right or left to adjust the number of pixels. Picasa uses your selected amount of pixels as the image's new height or length, whichever is larger in the original image.
Click the "Export" button.
Tips & Warnings
- You can use this feature to enlarge an image, but the new image will be of poor quality. The original, smaller image doesn't contain enough detail to produce a detailed larger image.