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Pdf joiner allows you to merge multiple pdf documents and images into a single pdf file, free of charge. Computer fundamentals pdf format what is a pdf file. Remote work advice from the largest allremote company. It also discusses how to download adobe acrobat reader and how to convert your documents into pdf format. What does pdf mean and how do i save a file as a pdf. Based on the postscript language, each pdf file encapsulates a complete description of a fixedlayout flat document, including the text, fonts. Available only for a search of multiple pdfs or index definition files. Pdf portable document format is a file format that has captured all the elements of a printed.