Berlin, 8 June 2011 - callas software has expanded the conversion options of its flagship product pdfaPilot – the tool for professional creation and validation of PDF/A files. Version 2.4 of callas pdfaPilot allows users to convert numerous additional formats into PDF/A files. These include PostScript/EPS and JPEG, TIFF and PNG image formats. An additional highlight of the product update is the validation of PDF/VT – a standard format for variable data printing. callas pdfaPilot 2.4 checks the corresponding pages of a document to ensure they comply with the standard and provides detailed error messages if it encounters discrepancies.