Callas pdfToolbox v5.0.132 | 250 MB Specializing in PDF-technology callas software has announced a universal software for printing industry pdfToolbox 5 functionality is no longer limited to prepress stage, supports the latest versions of Adobe Acrobat, for the imposition of any product. With software, you can split and glued PDF-files, resize, adjust the size, move, stretch, rotate, and to implement, replace and convert fonts, retaining the correct spacing between letters.