The estimated file size in the Export Bitmap Image dialog box is very approximate ? especially for JPG and similar formats that automatically compress the file to give a small file size but maintain the quality of the image. Any e-mail attachment larger than 3MB is usually returned to the sender with the comment that it exceeded the maximum file size. ![]() ![]() The usual limit is 3 MB, but some are even smaller. An important consideration these days in creating and e-mailing bitmap images to customers for their approval is balancing the resolution of the file with the need to have the file small enough to send by e-mail. ![]() If you change any one of these three settings, the other two will automatically be changed to the corresponding value. For example, if an image is 10 inches wide by 5 inches high and the Dots/Inch setting is 100, the Pixels Wide value will be 1000 and the Pixels High value will be 500. The Dots/Inch value is multiplied by the width and height of the image to come up with the Pixels Wide and Pixels High values ? so these setting are interdependent. ![]() When you export a design from the Wizard using one of the bitmap data formats (JPG, PCX, TIF, etc.) you can specify the Dots/Inch, Width (or Height) in pixels, and the Bits per Pixel.
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