Created attachment 175910 [details] The ODS file used to demonstrate this problem. "File-->Export as PDF" is creating artifacts in the PDF file that do not exist in PDFs created by "Print-->Save as PDF" on macOS 10.14.6 (18G9323). Problem occurs in both normal and safe mode, and LO has full disk access enabled. Specifically, if you color fill part of a column of merged cells, and have a different column color filled over a different range, the start and end of a range will leave fine white lines in the colored column with the shorter range. In general, the lighter the color of the overlapped column, the more prominent are the lines. The file Annotated Screenshot contains an example with the more prominent lines circled. Why not just print as PDF instead of exporting, if exporting is a problem? Because I can't sign or secure documents that are printed, and securing documents works on export. (Lines appear regardless of securing/signing.) I have attached several files which illustrate this problem, including a sample ods file.
Created attachment 175912 [details] Screenshot of PDF with lines, with most visible examples circled
Created attachment 175913 [details] File created by Export as PDF -- has lines
Created attachment 175914 [details] FIle created by Print->SaveAsPDF -- has no lines, but can't sign or secure it!
The lines in the pdf are not visible in Adobe Reader nor Edge browser. The lines in the pdf are visible in LibreOffice Draw up to a resolution of 1000% when they disappear. They seem to be screen artefacts that are visible in some pdf viewers. See question https://ask.libreoffice.org/t/bug-in-export-so-can-anyone-recommend-a-program-to-sign-and-secure-a-pdf-file-created-by-print-saveaspdf/69699
Hi Alistair, That is my question in Ask. :-) As I recently updated there, on a Mac, I see the artifacts everywhere I try to view the PDF, including: FireFox, Brave (Chrome), PDF Expert, Preview, and Acrobat Reader. Apparently it is a know issue, and not just in LO. One suggestion I received may work: a) Print in LO b) Use 3rd party app to disable printing, editing, saving. c) Sign in LO using the "sign existing PDF" capability I did not realize it had! Thanks for your feedback! JK
I can confirm Version: 7.2.5.2 / LibreOffice Community Build ID: 499f9727c189e6ef3471021d6132d4c694f357e5 CPU threads: 10; OS: Mac OS X 12.2; UI render: default; VCL: osx Locale: en-US (en_US.UTF-8); UI: en-US Calc: threaded
Still present, also on Linux Artifacts shown in Draw, Firefox PDF viewer and Preview Version: 7.0.4.2 Build ID: 00(Build:2) CPU threads: 8; OS: Linux 5.10; UI render: default; VCL: x11 Locale: en-US (en_US.UTF-8); UI: en-US Debian package version: 1:7.0.4-4+deb11u4 Calc: threaded Version: 7.5.1.2 (AARCH64) / LibreOffice Community Build ID: fcbaee479e84c6cd81291587d2ee68cba099e129 CPU threads: 10; OS: Mac OS X 13.2.1; UI render: default; VCL: osx Locale: en-US (en_US.UTF-8); UI: en-US Calc: threaded