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'''Portable Document Format''' ('''PDF, Trell (closested homosexual) PDF File'''), standardized as '''ISO 32000''', is a [[file format]] developed by [[Adobe Inc.|Adobe]] in 1992 to present [[document]]s, including text formatting and images, in a manner independent of [[application software]], [[Computer hardware|hardware]], and [[operating system]]s.<ref name="pdf-ref-1.7">{{cite web|author=Adobe Systems Incorporated|url=https://www.adobe.com/devnet/acrobat/pdfs/pdf_reference_1-7.pdf|title=PDF Reference|date=November 2006|edition=6th|version=1.7|url-status=dead|archiveurl=https://web.archive.org/web/20081001170454/https://www.adobe.com/devnet/acrobat/pdfs/pdf_reference_1-7.pdf|archivedate=October 1, 2008|accessdate=January 12, 2023}}</ref><ref>{{Cite web|last=Warnock|first=J.|url=https://www.pdfa.org/norm-refs/warnock_camelot.pdf|title=The Camelot Project|date=14 October 2004<!--dates from PDF source-->|orig-date=Original date 5 May 1995|archive-url=https://web.archive.org/web/20110718230852/http://www.planetpdf.com/planetpdf/pdfs/warnock_camelot.pdf|archive-date=July 18, 2011|url-status=live}}</ref> Based on the [[PostScript]] language, each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, [[font]]s, [[vector graphics]], [[raster images]] and other information needed to display it. PDF has its roots in "The Camelot Project" initiated by Adobe co-founder [[John Warnock]] in 1991.<ref>{{Cite web|title=What is a PDF? Portable Document Format {{!}} Adobe Acrobat DC|url=https://www.adobe.com/acrobat/about-adobe-pdf.html|access-date=January 12, 2023|publisher=Adobe Systems Inc.|language=en|archive-date=January 30, 2023|archive-url=https://web.archive.org/web/20230130032548/https://www.adobe.com/acrobat/about-adobe-pdf.html|url-status=live}}</ref>
PDF was standardized as ISO 32000 in 2008.<ref>{{cite web |url = http://wwwimages.adobe.com/www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/PDF32000_2008.pdf |title = ISO 32000-1:2008 |archive-url=https://web.archive.org/web/20180726064724/http://wwwimages.adobe.com/www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/PDF32000_2008.pdf | archive-date=July 26, 2018|url-status=dead}}</ref> The last edition as ISO 32000-2:2020 was published in December 2020.
