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Make QR Code in Software Creating a JPEG File

Creating a JPEG File
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Saving an image in JPEG format means selecting from fewer options, because JPEGs don t reduce the colors to a set number (256 or fewer for GIFs) In the Optimize palette, select JPEG as the Filetype, as shown here, then experiment with the following settings to find the right balance of quality and file size
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CHAPTER 10: Creating Graphics for the Web
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I Optimized Checkbox Check this checkbox to reduce the file size of the JPEG by a small amount I Image Quality You can set the quality of the image either by choosing High, Medium, or Low from the drop-down menu, or by setting an amount in the numeric box to the right of the drop-down menu, as shown in Figure 10-2 I Progressive A progressive JPEG image downloads in progressively higher quality On a slower modem, the web site viewer looking at a progressive JPEG first sees a very low quality JPEG, followed by a higher quality JPEG I Blur Add a small amount of blur to create a smoother image that is also smaller in file size When you are happy with the file size and image quality, select File | Save Optimized
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FIGURE 10-2
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Unfortunately, what you see in ImageReady or Photoshop is not always what you see in a web browser It s always best to check your work in a browser before you upload pages to your web server There are several ways to preview an image You can preview the image in your default web browser by clicking the web browser icon on the ImageReady toolbox, as shown on the left This launches your web browser with the image It s helpful to do this to gauge the relative size of the image, and to see how the colors display Because different operating systems display the same colors differently, you will want to be able to preview your image as it would appear for both Windows and Mac users, regardless of your own operating system You can do this by selecting View | Preview | Standard Windows Color, and View | Preview | Standard Macintosh Color in ImageReady as shown below
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If you re concerned about users with monitors set to 256 colors or fewer recent statistics put these users at 5-10% of all web users you can select View | Preview | Browser Dither
Legibility and Web Graphics
If you ll be using type in graphics, there are a few things you can do to improve the legibility of your type in the low-resolution environment of the Web
CHAPTER 10: Creating Graphics for the Web
I Size You ll want to create type that is readable, and at about 8 points most typefaces start to become unreadable However, for very small type there are typefaces designed specifically for use in web graphics at small sizes These typefaces are known as screen, or bitmap, fonts You can see a sample of these fonts below You can find these fonts at http://wwwatomicmedianet, http://wwwminimlcom, http://wwwlarabiefontscom, http://wwwmyfontscom, and http://wwwkottkeorg/plus/fonts
Ill 10-11
I Contrast The easiest combination of background and type to read is a white or very pale background with black type You can also use a very dark background with white type, but too much of this, called reversed type, can be very tiring to read Keep the contrast between the background and type high to maintain legibility Adding a drop shadow or outer glow layer effect to type can make the type pop out from the background, as shown here I Anti-Aliasing Applying anti-aliasing to type creates smooth edges, increasing legibility However, at about 10 points or less, anti-aliasing just makes the type fuzzy When you use the type tool, you can select the type of anti-aliasing in the options bar For very small type sizes, set the Antialiasing to None
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