| compression | Select the compression action for the file. Enter one of these values: | |
| compress-entire-file | Compress document as a single unit | |
| compress-document-structure | Compress the document structure only | |
| remove-compression | Removes compression from file streams |
Optional. Enable any of these values by adding it to the profile and setting it equal to "on."
| flate-encode-uncompressed-streams | Compress uncompressed streams using Flate. |
| convert-lzw-to-flate | Recompress LZW-compressed streams using Flate. |
| optimize-page-content | Removes redundant content streams, or page text. |
| optimize-for-fast-web-view | Place all the information needed to render the first page of the document near the beginning of the file. This process is also known as linearization. This allows a web browser to open the PDF document more quickly. |
Flate, or Deflate compression, is an open source standard widely used for creating zip files and in PDF documents. It is commonly used for PNG image files, and is much more widely used than LZW.
LZW, Lempel-Ziv-Welch, is a universal data compression algorithm, once widely used with Unix platforms. This method appears in some old PDF documents but it is rarely used any longer.
{
. . .
"cleanup": {
"compression": "compress-entire-file",
"flate-encode-uncompressed-streams": "on",
"convert-lzw-to-flate": "on",
"optimize-page-content": "on",
"optimize-for-fast-web-view": "on"
. . .
}