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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. Higher resolutions, such as pixels per inch ppi , are suitable only for small page sizes up to 6. 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. Higher resolutions, such as ppi, are suitable only for small page sizes up to 6.
TIFF is a flexible bitmap image format supported by virtually all paint, image-editing, and page-layout applications. Resolution is determined automatically. Specifies a compression format. ZIP compression also produces a small file. In these cases, LZW compression is recommended.
The following options are available when you click on the settings icon:. The following options are available when you click on Advanced Settings :. To add a navigation pane, enable the following:. Choose one of the criteria to split the document into multiple HTML files. Include Images. Detect and Remove Headers and Footers. Recognize Text If Needed.
Set Language. Excel Workbook Settings. Numeric Settings. Treat the following as decimal and thousands separators. Enter or choose separators in the respective fields. Printer Description File. Acrobat Default provides a starting point and reference for creating all types of PostScript and restores all default settings for the conversion. Adobe PDF 7. This option is available only for PostScript PS format.
Specifies the output format of image data. Binary output yields smaller files, but not all workflows can accommodate binary output. Specifies the level of PostScript compatibility. Use Language Level 3 only if the target output device supports it. Language Level 2 is suitable for EPS files that are placed in another document and color-separated as part of that document.
Font Inclusion. Specifies the fonts to be included in the PostScript. Embedded fonts are taken from the PDF; the referenced fonts are taken from the computer in use. Include Comments. Convert True Type to Type 1. Include Preview. This option is not available when saving as PostScript.
Specifies the pages you want to export. The following options are available when you click on the XML 1. Refers to the binary values, based on international standards, used to represent the text characters.
UTF-8 is a Unicode representation of characters using one or more 8-bit bytes per character; UTF represents characters using bit bytes. Generate Bookmarks. Generate Tags For Untagged Files. Generates tags for files that are not already tagged, such as PDFs created using Acrobat 4. If this option is not selected, untagged files are not converted. Tags are applied only as part of the conversion process and are discarded after the conversion.
This is not a method for creating tagged PDFs from legacy files. Generate Images. Controls how images are converted. Use Sub-Folder. Specifies the prefix added to the image filenames if you have several versions of the same image file.
Output Format. Downsample To. Downsamples image files to the specified resolution. If you do not select this option, image files have the same resolution as in the source file. Image files are never upsampled.
Legal Notices Online Privacy Policy. User Guide Cancel. The options available in panels vary depending on this choice. Select the check box next to a panel for example, Images, Fonts, Transparency , and then select options in that panel. To prevent all of the options in a panel from executing during optimization, deselect the check box for that panel.
Optional To save your customized settings, click Save and name the settings. To delete a saved setting, choose it in the Settings menu and click Delete.
Also, you can quickly compress or reduce the size of a PDF file online from your browser. The Images panel of the PDF Optimizer lets you set options for color, grayscale, and monochrome image compression, and image downsampling. Reduces file size by lowering the resolution of images, which involves merging the colors of original pixels into larger pixels.
Note : Masked images and images with a size less than by pixels are not downsampled. Reduces file size by eliminating unnecessary pixel data. ZIP is the better choice for illustrations with large areas of solid, flat color, or patterns made up of flat colors.
For JPEG compression, you can also specify lossless so that no pixel data is removed. Compression for monochrome images is lossless, except for JBIG2 compression, which provides both Lossy and Lossless modes of compression.
Available only for JPEG format. 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 is recommended. When selected, if the image setting will cause an increase in file size, the optimization for that image is skipped.
Text in these languages is replaced with a substitution font when viewed on a system that does not have the original fonts. The Fonts panel of the PDF Optimizer contains two lists for fonts: fonts that are available for unembedding, and fonts to unembed.
To unembed fonts in a document, select one or more fonts in the Embedded Fonts list, and click the Unembed button. If your PDF includes artwork that contains transparency, you can use presets in the Transparency panel of PDF Optimizer to flatten transparency and reduce file size. Flattening incorporates transparency into corresponding artwork by sectioning it into vector-based areas and rasterized areas. PDF Optimizer applies transparency options to all pages in the document before applying other optimization options.
If you select the Acrobat 4. This ensures compatibility with Acrobat 4. When you create flattening presets, they appear with the default presets in the Transparency panel. You can discard objects created in Acrobat and in other applications.
Selecting an object removes all occurrences of that object within the PDF. In the Discard Objects area, you can select from these and other options:. Disables all actions related to submitting or importing form data, and resets form fields.
This option retains form objects to which actions are linked. Flatten Form Fields. Makes form fields unusable with no change to their appearance. Form data is merged with the page to become page content.
Discard All JavaScript Actions. Discard All Alternate Images. Removes all versions of an image except the one destined for on-screen viewing. Some PDFs include multiple versions of the same image for different purposes, such as low-resolution on-screen viewing and high-resolution printing.
Discard Embedded Page Thumbnails. Removes embedded page thumbnails. This is useful for large documents, which can take a long time to draw page thumbnails after you click the Page Thumbnails button. Discard Document Tags. Removes tags from the document, which also removes the accessibility and reflow capabilities for the text. Convert Smooth Lines To Curves. Reduces the number of control points used to build curves in CAD drawings, which result in smaller PDF files and faster on-screen rendering.
Detect And Merge Image Fragments. Looks for images or masks that are fragmented into thin slices and tries to merge the slices into a single image or mask. Discard Embedded Print Settings. Discard Embedded Search Index. Discard Bookmarks. Removes information in the document information dictionary and all metadata streams. Removes all file attachments, including attachments added to the PDF as comments.
Removes links to other documents. Links that jump to other locations within the PDF are not removed. Strips information from a PDF document that is useful only to the application that created the document.
This does not affect the functionality of the PDF, but it does decrease the file size. Decreases file size. The options in the Clean Up panel of the PDF Optimizer dialog box allow you to remove useless items from the document. These items include elements that are obsolete or unnecessary for your intended use of the document. Removing certain elements can seriously affect the functionality of the PDF.
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