Why does LO5.1.4 Writer "PDF export" don't compress PNG images if JPEG compression is enabled? [closed]
I exported a LO Writer document with added PNG images (300dpi fullsize A4 image) to PDF with JPEG compression enabled, but filesize was always very high and the images were saved lossless inside the PDF file. Then i converted the PNG files to JPEG (resolution untouched, quality 90%) and created the Writer document again with this JPEG files added. Now i exported the document again to PDF with JPEG compression enabled and now all worked like expected, also the JPEG quality option. I always thought JPEG compression option inside the PDF export function is for all images, no matter what datatype they had at the time they were added to the document. This means i always have to convert images to JPEG before i can add it to the document, if i later want to export a small PDF file.