This format allows to work with texts, create interactive survey forms and templates.

pdf extension initially is a private development by Adobe Systems, which received the status of an international ISO format and became publicly available in 2008. pdf files are very popular for electronic document management, because the pdf-format is more flexible than others. PDF editors allow users to create and edit content, modify media, change structure, etc. These are special programs intended to provide editing options for documents in PDF format.