Tip. When saving, you can select the image format and
compression method. Image compression lets you decrease file size.
Methods used for image compression differ by compression rate and
data losses. Two factors define the choice of compression method:
the resulting image quality and file size.
ABBYY FineReader lets you use the following compression
ZIP — provides for no data losses and is used for
images containing large sections of one color. For example, this
method is used for screenshots and black-and-white images.
JPEG — used for gray and color images, for example,
photos. This method provides for a high-density compression but
leads to data losses and poorer image quality (blurred outlines and
poor color palette).
CCITT Group 4 — provides for no data losses and is
used for black-and-white images created in graphical programs or
scanned images. The CCITT Group 4 compression is a
widespread compression method applied to virtually all images.
Packbits — provides for no data losses and is used
for scanned black-and-white images.
LZW — provides for no data losses and is used for
graphics and gray images.