Image Size Use
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The document discusses determining the appropriate image size by considering pixels, dots per inch (DPI), and inches. It notes that pixels are the number of dots that make up the image file, DPI is the number of dots per inch, and inches is the actual printed or scanned size. It also provides limitations for images on the web of 500x700 pixels, 72 or 96 DPI, and maximum sizes of 6.94x9.72 inches at 72 DPI or 5.21x7.29 inches at 96 DPI. Steps are outlined to prepare an image by first determining the desired web size in inches, then saving and compressing the image file accordingly.
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Image Size Use
- 1. Determine what the image size should be. Pixels Dots Per Inch Inches When dealing with graphics files there are 3 properties that go into determining the resolution or size of a file.
- 2. Pixels Pixels: The exact number of 'dots' both horizontally and vertically that make up the file. This is the actual resolution of the file. DPI and Inches affect only the size of the image as it is displayed or printed, but the actual pixels is finite in a bitmapped file.
- 3. Dots Per Inch DPI (Dots per inch): The number of 'dots' or pixels per each inch of a printed or scanned document.
- 4. Inches The actual size measured in inches (either printed or scanned) of an image.
- 5. Web Manager Limitations Image names must be saved without spaces Image size is limited to 500 x 700 pixels Image resolution can be 72 dpi or 96 dpi In inches the image limitation is 6.94x9.72 inches at 72dpi 5.21x7.29 inches at 96 dpi
- 6. Steps to prepare image size. Determine the size of image that should appear on web. Use a graphics program to save the image to the determined size in inches first. Compress the image for the web using either Photoshop or Microsoft office picture manager. 4. Save the image in the appropriate file format. (Remember save the name without spaces)