xpdf-tiff-patches

Patches and Windows binaries for the Xpdf toolkit command line utilities (upstream release version 4.05) to enable TIFF output and more, see: https://www.xpdfreader.com

Patch pdftotiff-xpdf-4.05.patch adds alpha channel export capability for pages rendered to bitmap:

• pdftoppm has -alpha option which exports the mask (only) as an 8-bit PGM
• new tool "pdftotiff" allows export of pages as TIFF files (requires an available libtiff to compile)
• pdftotiff also has -alpha option allowing generation of image with mask (to the same file)
• pdftotiff and pdftoppm have new -cmyk option allowing generation of color separated TIFF files (only if configured with -DSPLASH_CMYK=ON to cmake)
• TIFF output files are compressed by default with LZW (or Huffman-RLE for -mono); this can be disabled with option -no-compression

Patch pdfimages-xpdf-4.05.patch allows export of embedded images in more formats (PNG or TIFF):

• pdfimages now has -png option to export as PNG files as monochrome, grayscale or color
• pdfimages now also has -tiff option (when libtiff is available) to export as TIFF files in monochrome, grayscale, color or separated (as they are in the source PDF)
• pdfimages can now correctly export indexed color images as RGB (either PNG or TIFF)
• masks are written to separate image files, as either a monochrome or grayscale, PNG or TIFF (this is not ideal, but I'm unsure of how to resolve this)
• specifying -j (optionally in addition to either -raw, -png or -tiff) exports embedded JPEG images as .jpg files with other images in the specified format (PBM if not specified)

See the latest release for 32 and 64-bit Windows binaries compiled with Visual Studio 2022 (C++ compiler version 19.38.33134). To run these executables, you may need to install the Windows C++ redist (Visual Studio redistributable libraries), which are linked from this page:

https://docs.microsoft.com/en-US/cpp/windows/latest-supported-vc-redist?view=msvc-170