To change the pixel dimensions of an image during optimization:

1 Click the Image Size tab in the Save For Web dialog box.

2 To maintain the current proportions of pixel width to pixel height, select Constrain Proportions.

3 Enter values for Width, Height, or Percent.

4 Choose an interpolation method from the Quality pop-up menu:

• Jagged (Nearest Neighbor) for the faster, but less precise, method. This method is recommended for use with illustrations containing non-anti-aliased edges, to preserve hard edges and produce a smaller file.

• Smooth (Bicubic) for the slower, but more precise, method, resulting in smoother tonal gradations.

For more information on interpolation, see "About resampling" on page 66.

5 Click Apply.

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