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convert -depth 1 -gravity center -pointsize 78 -size 500x500 caption:'Lorem ipsum etc etc' -background white alpha.tif tiff2pdf -o alpha.pdf alpha.tif The image in the resulting PDF is corrupt.
I think it is 1 bit image with alpha that tiff2pdf has issues with tiffinfo poc/bug2718_alpha.tif TIFF Directory at offset 0xf42c (62508) Image Width: 500 Image Length: 500 Bits/Sample: 1 Compression Scheme: None Photometric Interpretation: min-is-black Extra Samples: 1<unassoc-alpha> FillOrder: msb-to-lsb Orientation: row 0 top, col 0 lhs Samples/Pixel: 2 Rows/Strip: 500 Planar Configuration: single image plane Page Number: 0-1 White Point: 0.3127-0.329 PrimaryChromaticities: 0.640000,0.330000,0.300000,0.600000,0.150000,0.060000
Bugzilla is no longer used for tracking libtiff issues. Remaining open tickets, such as this one, have been migrated to the libtiff GitLab instance at https://gitlab.com/libtiff/libtiff/issues . The migrated tickets have their summary prefixed with [BZ#XXXX] where XXXX is the initial Bugzilla issue number.
