In most design programs, you can choose the degree of compression you wish to apply to individual images-just be aware that by doing so, you also will alter the image’s quality. JPEGs are also “ lossy,” meaning they retain all color information, but compress file size by selectively discarding data-and that compression can result in a loss of quality. JPEG images (short for Joint Photographic Experts Group) are “full-color images that dedicate at least 24 bits of memory to each pixel, resulting in images that can incorporate 16.8 million colors,” and are frequently referenced by their file extension, JPG. Plus, instantly see how your campaigns look in all popular email clients and mobile devices. Test your images for file-size and load time with Litmus Checklist.
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