How do I specify compression ratio for JPEG format?
The JPEG image format offers a lossy type of compression and the option to trade between the loss in image quality and compression ratio. To fine-tune JPEG compression quality, use the ‘–qualit” parameter as illustrated in the following sample: pdf2image –quality 80 -f jpg Test/tiger.pdf Compression quality is a number in the range from 1 to 100. Lower numbers usually result in better compression at the expense of image quality. The default in 80.
