Created attachment 129879 [details]
Check attached file:
1. Open in Impress
2. Tools - Minimize Presentation
3. press Finish
4. save as mini
5. Check file size
On my LO 5.2 and on LO 5-3~2016-12-21_23.17.44:
4695479 Dec 22 19:16 prezmin52-2.mini.odp
4202188 Dec 22 18:56 prezmin52-2.odp
$ 7z l prezmin52-2.odp |fgrep Pict
2016-12-22 15:56:36 ..... 4178606 4178606 Pictures/1000000000000640000004B049DB91076AFAE093.png
$ 7z l prezmin52-2.mini.odp |fgrep Pict
2016-12-22 16:16:14 ..... 4178606 4178606 Pictures/1000000000000640000004B049DB91076AFAE093.png
2016-12-22 16:16:14 ..... 468836 468836 Pictures/1000000000000640000004B0A36F7E71C1FA14AE.jpg
I chose optimize for screen size and it truly increases the file size.
Arch Linux 64-bit, KDE Plasma 5
Build ID: fc0d4e6bc43d5f982452df07930f5ecf5927ad22
CPU Threads: 8; OS Version: Linux 4.8; UI Render: default; VCL: kde4;
Locale: fi-FI (fi_FI.UTF-8); Calc: group
Built on December 31st 2016
a test with one random file of my own in a recent daily, does reduce file size significantly
Already creates larger presentation in 3.3.0 / Windows 7.
(In reply to Cor Nouws from comment #2)
> a test with one random file of my own in a recent daily, does reduce file
> size significantly
It must be specific to attachment 129879 [details], then.
Maxim: looking at your grepping result, were you expecting the PNG to be turned into a JPEG? Now it seems to have created a JPEG just for a thumbnail or something and not removed the PNG.
(In reply to Buovjaga from comment #4)
> (In reply to Cor Nouws from comment #2)
> > a test with one random file of my own in a recent daily, does reduce file
> > size significantly
> It must be specific to attachment 129879 [details], then.
Yes, stop test in on random files.
1. New presentation
2. Insert some image
3. Add new page
4. Copy Image from 1st page to 2nd.
5. Save. Now in .odp you have 1 image file for both presentation's pages. It's good.
6. Open file again. Minimize. Check mini file. You have two images. Compressed for image on 1st page and untouched for image on 2nd page.
> Maxim: looking at your grepping result, were you expecting the PNG to be
> turned into a JPEG? Now it seems to have created a JPEG just for a thumbnail
> or something and not removed the PNG.
Thumbnails in folder "Thubnails/", but my grepping for "Pictures/" ;)
You may get minimized file from my example. On first page right click on image and select "Edit with External tool". It will see jpeg file, not png.
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