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When should optical character recognition (aka OCR) be turned ON and how does it affect overall file size?

April 26, 2017affect AKA character file OCR optical overall recognition size turned

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When should optical character recognition (aka OCR) be turned ON and how does it affect overall file size?

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OCR is the process of converting an image into corresponding text. It is a necessary step if the input files i. are scanned, ii. have not yet been OCRed, and iii. the intended application requires text searchability. With respect to file size, there is very little increase in file size (about 5%) as a result of running PdfCompressor with OCR set to ON.