STDU Converter

STDU Converter is an easy-to-use program that lets you easily convert DjVu, TIFF, DCX, and Comic Book Archive (CBR or CBZ) documents to Portable Document Format (PDF). STDU Converter not only does not increase the size of the file during conversion, but in most cases it reduces it without loss of data or quality.

You can choose to convert the whole document or just the pages you want. Such parameters as resolution, rotation, brightness, contrast, etc. are also adjustable for each document. If the program contains colors, you can enable the "replace colors with grayscale" option.