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					Originally Posted by mohsen.amiri  I need to edit tho photo (via editors like snagit), then it is not better to copy/paste the image. | 
	
 Your original post said only that you needed to:
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					Originally Posted by mohsen.amiri  transfer the image from PDF into docx document. | 
	
 It said nothing about editing the image. So this isn't a Word problem at all. Regardless, you can open the PDF in Word, then copy the image from there and paste it into your image editor.