Optimizing Your Banner Illustrator CS2 - 2
- Start with JPEG format and High quality. In the panel on the right, you will find the section labeled Preset. There you will see some drop-down menus. The first menu on the left contains the Optimized File Format choices. Set this to JPEG. The menu under that contains the Compression Quality choices. Set this to High. Leave the other settings at their defaults.
- Check the details. Under the Preset section is a few more tabs. Click on the Image Size tab. The finished banner image should still be 468 x 60 pixels. Under that, verify that the Anti-Alias and Clip to Artboard checkboxes are not checked. If these boxes were checked, it would effect the finished size of our image.
- Choosing a quality setting. Now look at the bottom of the large panel containing the image. There you will find the information about your optimized image. First it tells you that the image will be converted to JPEG format. Under that is the projected file size and download time. Click on the 2-Up tab and it will show you both the original image and the optimized image. But we want to take a look at how our image will decrease in quality at the Medium and Low compression quality settings. Click on the 4-Up tab and you will see four versions of your image. Click on the second panel and set the Compression Quality to High in the drop-down menu. Click on the third panel and set the Compression Quality to Medium. Finally, click on the fourth panel and set the Compression Quality to Low. As you can see, the file size and download time are reduced for the Medium and Low settings. Now you need to compare the visual quality of these three versions and choose for yourself which quality setting is best for your project. Click on the panel for the quality setting of your choice. Finally, click Save to open the Save Optimized As dialog box. Give your final image a name and save it in the location of your choice.
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