For example, some viewers allow adding of annotations, signatures, etc Some software allows redaction, removing content irreversibly for security Extracting embedded text is a common feature, but other applications. [2] it offers free version with limited features to compress, convert and edit pdf documents [3] and its paid version offers advanced features like ocr, compress, and more Portable document format (pdf), standardized as iso 32000, is a file format developed by adobe in 1992 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems
It enables the construction of a transformation infrastructure which can be addressed by programs and environments through a web service interface. Pdf/e is a subset of pdf, designed to be an open and neutral exchange format for engineering and technical documentation Data compression aims to reduce the size of data files, enhancing storage efficiency and speeding up data transmission Image compression is a type of data compression applied to digital images, to reduce their cost for storage or transmission Algorithms may take advantage of visual perception and the statistical properties of image data to provide superior results compared with generic data compression methods which are used for other digital data.
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