Some digital cameras take and store large pictures, often exceeding 5 MB per photo. This ensures high-quality pictures, but can be memory-intensive. Older computers may not have the space. Even modern computers may run out of space if you collect thousands of pictures. Fortunately, most digital images can be stored in smaller sizes without any noticeable loss to the quality. For this, you'll need image-editing software, such as Adobe Photoshop. Although the directions will be given for Photoshop, other image-editing programs have similar features.
Open your digital photo in Photoshop. Select "Open" from the "File" menu and locate your photo in whatever directory you have it stored.
Click on the "Image" menu. Select "Image size." Resizing your photo is one of the easiest ways to reduce storage size.
Resize the picture. In the image size box, you have multiple options. Often, changing one will suffice. You may have to experiment before finding the right size. Check the "Constrain proportions" box so your picture's height and width remain in proportion. Change either the height or width to a smaller number. The other will automatically change. Save the changes.
Change the resolution, also in the image size box. If your camera has stored the picture with a 300 resolution, start with 200 and go from there. Your resolution will be either in pixels/inch or pixels/cm depending on how you have your height and width set. Save the changes.
Use "Save as" in the "File" menu. This opens "Jpeg options." Simply slide the bar to the size of file you want. Above the slide, numbers and words describing the size will appear. Save.