callas software have a range of Acrobat Plug-ins, command line tools and programming libraries designed to preflight, correct, colour convert and optimise PDF for print and online publishing, document management and archiving. callas tools excel in accuracy, reliability and practical orientation. Fast to install and easy to use, their tools are indispensable to all users from prepress and publishing. Whenever PDF files need to be prepared on a large scale for print production, callas software takes care of quality, safety, speed and efficiency.