What is a PDF ?
“PDF”- Portable Document Format is a type of file for viewing documents, created by Adobe. PDFs are especially suitable for print-out viewing. The format is a good choice for sharing high-value collateral like white papers and guides.
Based on the PostScript language, each Portable Document Format file encapsulates a complete description of a fixed-layout flat document. It including the text, fonts, vector graphics, raster images and other information needed to display it. Portable Document Format was standardized as an open format, ISO 32000, in 2008, and no longer requires any royalties for its implementation.
Now, PDF files may contain a variety of content besides flat text and graphics including logical structuring elements. Interactive elements such as annotations and form-fields, layers, rich media (including video content) and three dimensional objects using U3D or PRC, and various other data formats. The Portable Document Format specification also provides for encryption and digital signatures, file attachments and metadata to enable workflows requiring these features.
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