conversion of tif image produces readable but garbled PDF. #66

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opened 2021-04-25 19:58:34 +00:00 by josch · 0 comments

josch commented

2021-04-25 19:58:34 +00:00

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By Ken on 2019-12-06T20:28:03.371Z

I am trying to batch convert a set of images. Ultimately I need to append some together but before I get there I noticed some images display incorrectly in Foxit.
In Acrobat pro or acrobat reader when I try to open the PDF it says 'insufficient data for an image.'
File size is similar to other pdfs that look proper and were received from same source.

09n08ea03199401061.tif

09n08ea03.pdf

By josch on 2019-12-06T22:45:00.830Z

I am not surprised. Your TIFF file is a 2-color (so literally only black and white) TIFF encoded in CCITTGroup4. This is really hard to get right, so thank you for the test case!

Could you try converting your TIFF file with the version of img2pdf from git? Because for me that version work.

Thanks!

By josch on 2020-04-05T13:14:51.518Z

I released version 0.3.4 of img2pdf. It works for me with that version. Can you confirm or does your problem persist?

By josch on 2020-08-04T07:05:42.394Z

Since it's working for me, I'm closing this issue. Please re-open in case there is still a problem. Thanks!

By josch on 2020-08-04T07:05:42.633Z

Status changed to closed

*By Ken on 2019-12-06T20:28:03.371Z* I am trying to batch convert a set of images. Ultimately I need to append some together but before I get there I noticed some images display incorrectly in Foxit. In Acrobat pro or acrobat reader when I try to open the PDF it says 'insufficient data for an image.' File size is similar to other pdfs that look proper and were received from same source. [09n08ea03199401061.tif](/uploads/e4c5765b19f39b5438b6e9709f9c2f91/09n08ea03199401061.tif) [09n08ea03.pdf](/uploads/178db85ede93a104e024ecbad3743bab/09n08ea03.pdf) --- *By josch on 2019-12-06T22:45:00.830Z* --- I am not surprised. Your TIFF file is a 2-color (so literally only black and white) TIFF encoded in CCITTGroup4. This is really hard to get right, so thank you for the test case! Could you try converting your TIFF file with the version of img2pdf from git? Because for me that version work. Thanks! --- *By josch on 2020-04-05T13:14:51.518Z* --- I released version 0.3.4 of img2pdf. It works for me with that version. Can you confirm or does your problem persist? --- *By josch on 2020-08-04T07:05:42.394Z* --- Since it's working for me, I'm closing this issue. Please re-open in case there is still a problem. Thanks! --- *By josch on 2020-08-04T07:05:42.633Z* --- Status changed to closed