You can use Dreamweaver to sharpen an image which increases the image’s definition. To sharpen an image, use the steps provided in this tech-recipe.
1. Open the page containing the image.
2. Select the image.
3. Click Modify, and select Image. Then select Sharpen.
4. In the Sharpen dialog box, specify the degree of sharpening by either dragging the slider control or entering a value in the text box (from zero to ten).
5. Click OK.
To undo the sharpen effects:
Click Edit and select Undo Sharpen. This only works until you save the page containing the image. Once saved, the changes are permanent.