This morning's demonstration will be about image file formats that are used on web pages. For the most part you will be either using a
.jpg file or a
.gif file. If you are resizing or processing photos using Photoshop you will have to use the "
Save For Web" feature to save the files.
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| jpg file format |
JPG files are compressed in a way that makes them most suitable for photographs or images with a lot of color. Digital cameras are typically set to save your photos in this format.
GIF files contain at the most 256 colors and are best used for images which don't contain a lot of color. Line art, logos, are examples of this.
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| gif file format |
The purpose of using different file formats is both for image weight (meaning how many kb or mb the image is) and visually, how the image looks when compressed. Using the Save For Web option allows you to preview the image before you save it.
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