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@ -299,3 +299,14 @@ Tesseract might not do a lossless conversion. For example it converts CMYK
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input to RGB and removes the alpha channel from images with transparency. For
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input to RGB and removes the alpha channel from images with transparency. For
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multipage TIFF or animated GIF, it will only convert the first frame.
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multipage TIFF or animated GIF, it will only convert the first frame.
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Comparison to econvert from ExactImage
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Like pdflatex and podofoimg2pf, econvert is able to embed JPEG images into PDF
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directly without re-encoding but when given other file formats, it stores them
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just using flate compressen, which unnecessarily increases the filesize.
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Furthermore, it throws an error with CMYK TIF input. It also doesn't store CMYK
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jpeg files as CMYK but converts them to RGB, so it's not lossless. When trying
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to feed it 16bit files, it errors out with Unhandled bps/spp combination. It
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also seems to choose JPEG encoding when using it on some file types (like
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palette images) making it again not lossless for that input as well.
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