When you write learning stories in Microsoft Word, depending on the amount and the size of images used, the document size could become very big. When you save a large Word document into a PDF file, the PDF file could end up fairly large as well.
 
This can make the story upload a very slow process.

To avoid this, there is an option in Microsoft Word 2010 which allows you to optimize the file size.

Click on Save As option in Word, on the Save As dialog select Save as type to PDF. Then pick Minimum Size in the Optimize for: option and then click Save. The PDF file should be much smaller.

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