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Does HTMLDOC use LZW compression?

April 26, 2017compression htmldoc lzw

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Does HTMLDOC use LZW compression?

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No. In the distance past (PDF 1.1, Acrobat 2.x), LZW was the only supported compression format. However, Flate (aka ZIP aka LZ77) compression has been available since PDF 1.2 (Acrobat 3.0), and is the only type of lossless compression (for text and small images) supported by HTMLDOC. HTMLDOC also uses JPEG compression when writing larger images. At no time does HTMLDOC try to compress data using the (inferior) LZW algorithm.