When I scan multiple documents using my Mac computer and HP L7680 All In One printer/scanner, my file saves as a very large file 5.4MB. It's too large to attach and send as an email. One page when scanned saves as the size of 580kb or so. Documents are scanned as PDF and 200 resolution and gray-scaled. How do you make the files smaller?
The scanner produces a "picture" of the document, much as if you laid it flat on a table and took a picture of it with your digital camera. If you did this, your .jpg from the camera would be several hundred K at a minimum - comparable to the file size off the scanner. That's why the file is so big, it contains a picture and not text data - even though it's still a .jpg file.
If you reduce the scan resolution you will save space, but at the expense of legibility of the document image. To get it down to the smallest possible size, you will need to run the scanned image through OCR ( Optical Character Recognition ) into a Word document for example, and then print it out to a .pdf file. If you have a clean source document with few graphics this isn't as difficult as it may seem. Microsoft Office has an excellent OCR process known as Document Imaging. You need to carefully proof read the result but with a clean input Document Imaging is amazingly accurate in Office 2007.
In short, there is no easy solution to your problem.
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