Converting a Textbox with text to .jpg or other image

When converting a text box with just text in it to a .jpg or .png image it works EXCEPT it appears blurry; not as crisp as when printing from Writer or Draw. I use frames/text boxes occasionally with an image AND text, convert entire frame to an image but, again, the text is blurred a bit. If I print directly from Writer or Draw without converting the box to an image, it is fine. Need to convert however for some of the ways it is being used. Any ideas? I looked online and could not find any positive information on converting a text box to .jpg.