Check image compression ratio

Belongs to

Category: Image
Type: Checks

What it does

Checks the compression ratio of the images in a PDF against a particular threshold.

You can check the compression ratio of images compressed with one of the following compression methods:

CCITT
JPEG
ZIP
LZW
RunLength
JBIG2
JPEG2000

Example

If the JPEG images in your PDF should not be compressed at all, use the following values:

Compression ratio of JPEG images must be        <!-- Choose JPEG -->
equal to 1.0000                                 <!-- Choose  "equal to" and "1.0000" -->

A compression ratio of "1" means "no compression"; a compression ratio of "0.5" means "50%" , ...