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When I export as PDF on LibreOffice I've got a poor image quality on all the images and all the documents I made.

I've checked the option "Loseless compression" on the export preferences.

I take the screenshots with Shutter.

Also I have a friend who shows me a PDF exported like I'm doing and their PDF looks awesome...

enter image description here

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Welcome to AskUbuntu! I have used your image, and it doesn't seem to have been degraded after exported to PDF (see i.stack.imgur.com/4mJkU.png). Please check if the "reduce image resolution" option is checked. I'm using LibreOffice 4.1.1.2 (from PPA). –  carnendil Oct 16 '13 at 16:11
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As a side note, return $num % 2 == 0;? –  ladaghini Oct 16 '13 at 16:26
    
LO 3.6.6 here. I second carnendil. No problems, either. What LO version are you using, @Lloople? –  Glutanimate Oct 17 '13 at 4:53
    
I'm using LO 4.0 but I don't think it's a problem with LO. I think it's a problem with my Linux system, I also see another friend doing this with Ubuntu 13.10 and also have the same poor quality. Can be because the graphic card driver os something else? My graphic card is an ATI Mobility Radeon HD 4500 and I don't know what driver I have. –  Lloople Oct 29 '13 at 12:28
    
not sure this can help.... but in LO i can see different results for images when exporting pdf from odt files (no problems) or from a doc file (poor image resolution), actually this concerns graphics (borders) of cells pasted from Calc into writer they are properly exported to pdf only from .odt file (not from .doc) (lubuntu, LO 4.132) –  user233751 Jan 9 at 16:14

2 Answers 2

Also it's not a LO bug, I can reproduce it on Windows with MS Office, I think it's because my graphic card, but not sure because years ago I was able to export images in PDF with quality... Maybe my computer gets broked or the drivers today have a bug. Don't know but thanks for all your help and time.

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That's not an Ubuntu related feature. I can reproduce the same in Windows, with the most recent version. Unfortunately, LO writer is still terrible after so many years of development.

Conversion to PDF still greatly reduces quality even on lossless compression on all platforms tried. And it also automatically cuts of edges of images. Seems like your program is still full of bugs...

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