Description: Writer and Draw documents containing monochrome bitmaps (1bpp) work fine in OpenDoc formats, but when exported to PDF the resulting bitmaps are totally black Steps to Reproduce: 1.Open new Writer or Draw document 2.Insert monochrome bitmap 3.Export to PDF using default settings 4. View resultant PDF file using Adobe Acrobat. Voila! Actual Results: The PDFs have black areas corresponding to the bitmaps Expected Results: The monochrome bitmaps should have been reproduced in the exported PDF files Reproducible: Always User Profile Reset: No Additional Info: I am not sure when this bug appeared; I used to produce PDF files this way quite a bit, but somewhere in the last couple of years the problem occurred, and I started using Acrobat directly instead. I will supply example files illustrating the problem once the bug is accepted.
Hi, Chris, can you upload (see Add an attachment button) a simple file with a simple monochrome bitmap, in order to test this bug?
Created attachment 198898 [details] Zipfile containing mono bitmap, Writer doc, Draw doc and PDFs
I exported your Example.odg and Example.odt to PDF on Linux, and they are like before printing. I will test latter on Windows. Version: 25.2.0.3 (X86_64) / LibreOffice Community Build ID: e1cf4a87eb02d755bce1a01209907ea5ddc8f069 CPU threads: 16; OS: Linux 6.8; UI render: default; VCL: gtk3 Locale: ro-RO (ro_RO.UTF-8); UI: en-US Calc: threaded
Dear BogdanB (and others) I have been doing some further testing. I have taken the mono bitmap I used last time, and saved it with a range of different colour depths. I have created a new example Writer file, with five versions of the bitmap on the one page, and then exported to PDF. Only the monochrome image comes out black in the resultant PDF: al the others are fine. The problem only occurs with true monochrome bitmaps. I can send you the files so you can duplicate what I've done. Cheers, Chris Forbes
Created attachment 198931 [details] Example files to illustrate how colour depth of bitmaps alters PDF output This zip has a Writer document containing 5 (otherwise identical) embedded bmp files (but of different colour depths), the bitmap files themselves, and the PDF output. Note that only the mono bitmap exports as black: all the others export fine!
Version 25.2.1.2 Build ID: d3abf4aee5fd705e4a92bba33a32f40bc4e56f49 CPU threads: 8; OS: Windows 11 x86_64 UI render: Skia/Raster; VCL: win Locale: en-US; UI: en-US Calc: threaded Unable to reproduce bug, when attempting to save a Writer document with the attached bitmap, the exported PDF looks as expected.