=============================================== 原作者 www.impulseadventure.com Photoshop Save As vs Save For Web One of the more confusing options in Photoshop CS2 arises when it comes time to save your edited image. There are two methods to save your photo: using the Save As dialog box or using the Save For Web dialog box. This article answers the question: what are the differences between save for web and save as, and when should I use Save for Web? Photoshop offers two options to save your image after editing: • File -> Save As ... • File -> Save For Web ... Both of these menu otpions create an output JPEG file from your working image, but they differ in both the available options, flexibility and representation of JPEG compression quality.
Quick Choice If you plan to...【You should use】 Create images for your website, or optimize the file as small as possible【Save For Web 】 Share images with others, and you want viewers knowing shot time/date, etc. 【Save As 】 Share images with others, and you do not want others knowing shot time/date, etc. For example, stock photos, or concerns over privacy 【Save For Web】 Convert your image to a given file size, or you want interactive feedback on quality settings 【Save For Web】 ... for all other cases【Save As】
Photoshop Save As The Save As dialog includes a very large number of output file formats, as it is the standard method by which users will generate their final image files. As this output method is not optimized towards transmission over a low data-rate medium (such as the internet), additional information is encoded into the resulting image at the cost of increased file size. As shown below, this additional data may consume approximately 40KB. One of the main reason that photographers choose Save As instead of Save for Web when sharing photos is so that the EXIF metadata (which includes camera information and shot details) can be displayed to other interested viewers. Most photo sharing sites (such as pbase) automatically extract this EXIF information, for the benefit of other photographers. However, considering that it also includes the time and date of the original shot, it may have privacy implications.
16-bit Mode As Save As does not support for 16-bit images, it may be necessary to convert to 8-bit first, save and then undo the color depth conversion step if you plan to continue working on the file. You can convert to 8 bit RGB by selecting Image -> Mode -> 8-bits/channel. Save for Web automatically converts the color depth for you. 16位模式 由于”另存为”不支持保存16位模式的图像，所以有必要先转换成8位模式，保存。如果你要继续处理图片的话，就撤销上一步颜色位深的设置。把图像转为8位RGB图像的方式是菜单上的图像->模式->8位/通道。另存为网页格式会自动为你转换颜色位深。
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Photoshop Save For Web The Save For Web dialog box doesn&＃39;t provide as much flexibility in the ouput image file formats as the Save As dialog, but it does offer more flexibility with each supported option. Supported output file formats include: • JPEG - Selection of Quality level (1-100). No transparency. • GIF - Different palette sizes (2-256) and dithering options define quality. Supports single-bit transparency. • PNG-8 - Reduced color depth (2-256 colors) and dithering options defines quality. Supports multi-bit transparency. • PNG-24 - "Lossless" 24-bit quality. Supports multi-bit transparency. • WBMP - Black & White dithered output. （附图见下面的中文版） Main window for Save for Web The focus on this page will be on the JPEG output format.
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