Tips File Formats Scanned images are generally saved as graphics files, and several graphic file formats are available for use. To get the best scans, be familiar with the pros and cons of each file format and how they are compatible with your image-editing software and print method.
Scanned images vary in file size depending on several factors, including image type and resolution.
And the higher the resolution in which the image is scanned, the bigger the resulting file size. TIFF Short for Tagged Image File Format. TIFF is probably the most popular file format. It's good for storing bitmaps in many different resolutions, colour models and compression types, and is supported by many commercial applications. Use the TIFF format whenever possible, since this is the most widely used.