V Stuart Foote wrote > A printed copy of your PDF is not a very good test of document quality. > Embedded BMP representation within LibreOffice is at 300dpi. Export print > may be the vector format (wmf, emf, eps, svg) or a bitmap rendering > preview--at 300dpi. > > You really need to open each PDF in suitable viewer and zoom in to 800% > or 1200%. How do embedded images compare there? Are they bitmap? Or > more concise full resolution vector images? > > Also, the platform you work on will impact handling of vector images. > Several helper programs are needed--Ghostscript, ImageMagick, pstoedit and > the mix will impact handling as bitmap or vector.
To clarify: All original images are either JPG or PNG. I don't need super-clear printing, as this is a simple non-profit volunteer-run community magazine. I have zoomed the two files to 6,400% in Adobe Reader XI on Windows, and they look identical. V Stuart Foote wrote > Please provide your OS details, and perhaps attach a sample output (via > the Nabble interface). I am using Linux Ubuntu 14.04 64-bit. One of the files is too large for the Nabble interface, and so I am including links to the files instead. * PDF from version 4.3.4.1 <https://dl.dropboxusercontent.com/u/49313422/Version%204.3.4.1.pdf> * PDF from version 4.4.0.0 <https://dl.dropboxusercontent.com/u/49313422/Version%204.4.0.0.pdf> My suspicion now is that the current version converts the images to a bitmap, whereas the new version saves the images in their original format. Is there a way to look "inside" the PDF to see how the images are stored, either on Windows or Linux? Thank you for looking at this. Paddy -- View this message in context: http://nabble.documentfoundation.org/How-does-4-4-compress-PDFs-so-well-Is-there-a-quality-problem-tp4129492p4129563.html Sent from the Users mailing list archive at Nabble.com. -- To unsubscribe e-mail to: [email protected] Problems? http://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: http://wiki.documentfoundation.org/Netiquette List archive: http://listarchives.libreoffice.org/global/users/ All messages sent to this list will be publicly archived and cannot be deleted
