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  2. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    The files are then exported in PDF 1.3 format according to the file header. When taking a screenshot under Mac OS X versions 10.0 through 10.3, the image was also captured as a PDF; later versions save screen captures as a PNG file, though this behavior can be set back to PDF if desired.

  3. Machine-readable document - Wikipedia

    en.wikipedia.org/wiki/Machine-readable_document

    The Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware, and operating systems. Each PDF file encapsulates a complete description of the presentation of the document, including the text, fonts, graphics, and other information needed to display it.

  4. Comparison of e-book formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_e-book_formats

    The EPUB format is the most widely supported e-book format, supported by most e-book readers except Amazon Kindle [a] devices. Most e-book readers also support the PDF and plain text formats. E-book software can be used to convert e-books from one format to another, as well as to create, edit and publish e-books.

  5. PDF (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/PDF_(disambiguation)

    PDF (gene), a gene that in humans encodes the enzyme peptide deformylase; Palladium fluoride (PdF), a series of chemical compounds; Parton distribution function, in particle physics; Peak draw force, in a compound bow in archery; Percival David Foundation of Chinese Art; Pigment dispersing factor, in biology; Planar deformation features, in geology

  6. PDF/A - Wikipedia

    en.wikipedia.org/wiki/PDF/A

    PDF is a standard for encoding documents in an "as printed" form that is portable between systems. However, the suitability of a PDF file for archival preservation depends on options chosen when the PDF is created: most notably, whether to embed the necessary fonts for rendering the document; whether to use encryption; and whether to preserve additional information from the original document ...

  7. History of PDF - Wikipedia

    en.wikipedia.org/wiki/History_of_PDF

    The Portable Document Format (PDF) was created by Adobe Systems, introduced at the Windows and OS/2 Conference in January 1993 and remained a proprietary format until it was released as an open standard in 2008.

  8. Book scanning - Wikipedia

    en.wikipedia.org/wiki/Book_scanning

    Common file formats are DjVu, Portable Document Format (PDF), and Tag Image File Format (TIFF). To convert the raw images optical character recognition (OCR) [ 1 ] is used to turn book pages into a digital text format like ASCII or other similar format, which reduces the file size and allows the text to be reformatted, searched, or processed by ...

  9. List of open file formats - Wikipedia

    en.wikipedia.org/wiki/List_of_open_file_formats

    An open file format is a file format for storing digital data, defined by a published specification usually maintained by a standards organization, and which can be used and implemented by anyone. For example, an open format can be implemented by both proprietary and free and open source software , using the typical software licenses used by each.