When exporting to PDF, you can choose the JPEG compression ratio (1%-100%) and force a fixed image resolution (DPI). It seems like LibreOffice isn't really compressing the JPEG image if a compression ratio >75% is chosen.
For example, the attached file (my cute son there!):
- Exporting to PDF at 100% compression ratio & 150DPI = PDF's size 1.741 Kb
- Exporting to PDF at 76% compression ratio & 150DPI = PDF's size 1.741 Kb
- Exporting to PDF at 75% compression ratio & 150DPI = PDF's size 101 Kb
Steps to Reproduce:
1.Open the attached file
2.Go to File → Export PDF...
3.Set the ratio compression on 76% and save
4.Repeat step 3. with ratio compression 75%
Only after ratio compression is 75% or less, the JPEG deflating occurs
We should see a shrinking of the resulting PDF size when increasing the compression ratio.
User Profile Reset: No
Build ID: 1:6.0.3-0ubuntu1
CPU threads: 2; OS: Linux 4.15; UI render: default; VCL: gtk3;
Locale: ca-ES (en_US.UTF-8); Calc: group
Created attachment 143928 [details]
A test file with an cute image inside
This bug might affect others versions/platforms, but I cannot assure it.
Perhaps it's been already fixed with patch for tdf#102928
Could you give a try to LO version 6.0.6 ?
Yes, it's fixed. Thanks!
*** This bug has been marked as a duplicate of bug 102928 ***
You're welcome! :)