Adobe 29180155 - Photoshop Elements 4.0 Tutorial page 147

box, or click the arrows to change the number of colors. If the image contains fewer colors than the panel, the color table
reflects the smaller number of colors in the image.
6. If you chose Restrictive (Web) for the color-reduction algorithm, you can choose Auto from the Colors menu. Choose Auto if
you want Photoshop Elements to determine the optimal number of colors in the color table based on the frequency of colors in
the image.
7. Choose a dithering percentage, either by entering a percentage in the Dither text box or by clicking the Dither menu arrow and
dragging the slider that appears.
8. If the image contains transparency, select Transparency to preserve transparent pixels; deselect Transparency to fill fully and
partially transparent pixels with the matte color.
9. To create an animated GIF, select Animate.
10. To save your optimized image, click OK. In the Save Optimized As dialog box, type a filename, and click Save.
Optimize as PNG-24
PNG-24 format is suitable for compressing photographs. However, PNG-24 files are often much larger than JPEG files of the same image.
PNG-24 format is recommended only when you work with an image that includes multiple levels of partial transparency.
1. Open an image and choose File > Save For Web.
2. Choose PNG-24 for the optimization format.
3. Select Interlaced to create an image that is displayed at low-resolution in a browser while the full-resolution image is
downloading. Interlacing can make downloading time seem shorter and gives viewers feedback that downloading is in
progress.
4. If the image contains transparency, select Transparency to preserve transparent pixels; deselect Transparency to fill fully and
partially transparent pixels with the Matte color.
5. To save your optimized image, click OK. In the Save Optimized As dialog box, type a filename, and click Save.
Create an animated GIF
1. Place the images you want to appear in each frame of the animation on separate layers of the Layers panel. For example, to
create an animation of an eye blinking, you would place an image of the open eye on one layer, and an image of the closed
eye on another layer.
2. Choose File > Save for Web.
Note: If your image has multiple layers, you can also open the Save For Web dialog box from the Save As dialog box by
choosing CompuServe GIF Format and selecting Layers As Frames.
3. Optimize the image in GIF format.
4. Select Animate.
5. Set additional options in the Animation section of the dialog box:
Looping Options Continuously repeat the animation in a web browser, or animate only once. You can also choose Other to
specify the number of times the animation must loop.
Frame Delay Specifies the number of seconds that each frame is displayed in a web browser. Use a decimal value to specify
fractions of a second. For example, use .5 to specify half a second.
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