The PDF format is one of the most widely used formats in the world. The numerous functions it has to offer indeed makes the format complex. Many companies use it to exchange information between business partners or in-house. It therefore makes sense to use quality specifications to ensure interoperability within and outside a company. Standard formats defined for PDF can be used to define such quality requirements and simplify their compliance. They also relieve the burden of technical details and help clarify responsibilities within the process chain. ISO defined these standards to guarantee reliable PDF processing in view of the many PDF creation programs and the central importance of PDF. Let’s have a look.