Adobe 62000112DM User Guide - Page 151
RGB/CMYK/Grayscale, Colorspace/Resolution
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ADOBE ACROBAT 3D VERSION 8 144 User Guide Tile Size Divides the image being compressed into tiles of the given size. (If the image height or width is not an even multiple of the tile size, partial tiles are used on the edges.) Image data for each tile is individually compressed and can be individually decompressed. The default value of 256 is recommended. This option is available only for JPEG2000 format. Format Determines how the file is displayed. Available only for JPEG format. • Baseline (Standard) Displays the image when it has fully downloaded. This JPEG format is recognizable to most web browsers. • Baseline (Optimized) Optimizes color quality of the image and produces smaller file sizes but is not supported by all web browsers. • Progressive (3 scans-5 scans) Downloads the image first as a low-resolution image, with incremental quality improvements as downloading continues. RGB/CMYK/Grayscale Specifies the type of color management to be applied to the output file and whether to embed an ICC profile. Note: If you use the Save As or Export All Images command on a PDF that contains JPEG and JPEG2000 images, and export the content to JPEG or JPEG2000 format, the resulting image may look different when opened in Acrobat. This can happen if the images have a color profile included at the page level but not inside the image data. In this case, Acrobat cannot bring the page-level color profile into the resulting saved image. Colorspace/Resolution Specifies a color space and resolution for the output file. You can let Acrobat determine these settings automatically. To convert color images in the file to shades of gray, choose Grayscale. Note: Higher resolutions, such as 2400 pixels per inch (ppi), are suitable only for small page sizes (up to 6.826 inches or 173.380 millimeters). PNG options PNG format is useful for images that will be used on the web. Interlace Specifies if the image is interlaced. None creates an image that displays in a web browser only after downloading is complete. Adam7 creates an image that displays low-resolution versions in a browser while the full image file is downloading. Adam7 can make downloading time seem shorter and assures viewers that downloading is in progress; however, it increases file size. Filter Lets you select a filtering algorithm. • None Compresses the image without a filter. Recommended for indexed-color and bitmap-mode images. • Sub Optimizes the compression of images with even horizontal patterns or blends. • Up Optimizes the compression of images with even vertical patterns. • Average Optimizes the compression of low-level noise by averaging the color values of adjacent pixels. • Paeth Optimizes the compression of low-level noise by reassigning adjacent color values. • Adaptive Applies the filtering algorithm-Sub, Up, Average, or Paeth-best suited for the image. Select Adaptive if you are unsure of which filter to use. RGB/CMYK/Grayscale Specifies the type of color management for the output file and whether to embed an ICC profile. Colorspace/Resolution Specifies a color space and resolution for the output file. You can let Acrobat determine these settings automatically. To convert color images in the file to shades of gray, choose Grayscale.