<html>
<head>
<base href="https://bugs.documentfoundation.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - PNGs are expanded 20 times on export (w/lossless!), leading to bloated PDFs."
href="https://bugs.documentfoundation.org/show_bug.cgi?id=108032">108032</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>PNGs are expanded 20 times on export (w/lossless!), leading to bloated PDFs.
</td>
</tr>
<tr>
<th>Product</th>
<td>LibreOffice
</td>
</tr>
<tr>
<th>Version</th>
<td>5.1.4.2 release
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>UNCONFIRMED
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>Printing and PDF export
</td>
</tr>
<tr>
<th>Assignee</th>
<td>libreoffice-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>presentmeaninvite@gmail.com
</td>
</tr></table>
<p>
<div>
<pre>Today I’ve made a document, it’s resulting size was quite normal:
$ ls -s *odt
5.9M Руководство по системе управления порталом.odt
All images are linked and reside under ‘img’ subfolder, which doesn’t take more
than the document itself.
$ du -hs img/
2.1M img/
And the resulting document takes… whooping 53 MiB(!).
$ ls -s Руководство\ по\ системе\ управления\ порталом.pdf
53M Руководство по системе управления порталом.pdf
It was exported with PDF/A-a1 option, and I understand, that there are also
fonts embedded into the doc, but that’s around 5 megabytes including all the
variants (bold/italic), not more. Let’s export one image from a PDF viewer to
disk and compare the size:
$ du -hb '/home/dtr/work/docs/website cms/platformiosedit.png'
1836974 /home/dtr/work/docs/alma tv/website cms/platformiosedit.png
$ du -hb '/home/dtr/work/docs/website cms/img/0250.png'
87942 /home/dtr/work/docs/website cms/img/0250.png
What?..
$ echo 'scale=1; 1836974/87942' | bc -q
20.8
Twenty, almost twenty one times bigger? What kind of archiving is that?
Let’s not use PDF/A-a1 and compare again
$ ls -s 'Руководство по системе управления порталом w\o PDF\A-a1.pdf'
2.0M Руководство по системе управления порталом w\o PDF\A-a1.pdf
Two megabytes! Two! As it should be. It is interesting to export that same
iamge from the PDF viewer again.
$ du -hb 'platfromiosedit2.png'
91046 platfromiosedit2.png
Well, the size is bigger than that of the original image, but at least it’s
close.
My question stays the same since #93462: why LibreOffice thinks, that it should
modify original images, when it was clearly said to use Lossless images?</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>