impress odp file, export as pdf, reduce filesize

asked 2019-12-14 18:16:53 +0100

Grateful gravatar image

updated 2020-07-09 19:00:33 +0100

Alex Kemp gravatar image

Impress, have thirteen files with 60-130 slides each, graphics and gradient backgrounds. Export as pdf with jpg compression 70 and 150 dpi yields some of reasonable size (.8 to 2.8 MB) and four that are: 4.8, 5.1, 9.8, and 12.4 MB. Can someone help figure out how to reduce these four filesizes? I have tried everything I've found or been able to think of ... It appears to be due to the backgrounds, not my graphics.When I changed background to black, the filesize increased considerably. Reducing the dpi or increasing the jpg compression recudes the filesize but the output resolution is too poor. When I remove my graphics or reduce their sizes, the exported pdf filesize reduces only a little bit, not significantly. Using several online pdf reducers does not help (I assume because I've already used jpg compression in LO) If it would help, I can provide the links to the pdf files so you can see it. The biggest one (12.4 MB) is

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