Re: [libreoffice-users] Re: How does 4.4 compress PDFs so well? Is there a quality problem?

Hi :)
Yeh, i got that and it was interesting to see Stuart's response.

I was wondering if there are 2 distinct patterns;  1 for what happens when
you use 4.4.0 to edit old documents created with earlier versions of
LibreOffice or other programs/suites and the other pattern for new
documents.

There was something a few weeks ago about a Table-of-Content or Index (or
something) behaving differently in fresh new documents.  In older documents
the behaviour carried on even if the older document was opened in 4.4.0.  A
tad confusing but quite pleasing to note that documents remained consistent
regardless of what opened them.

Regards from
Tom :)





On 21 November 2014 10:43, Paddy Landau <paddy@landau.ws> wrote:

> TomD wrote
> > I think this is tooo new so no-one really knows yet!
> >
> > Is there a difference between freshly created new documents done in the
> > 4.4.0 compared with documents created in previous branches?
>
> Yes, there is a difference, comparing 4.3.4.1 and 4.4.0.0. The file size
> was
> what alerted me: it has been reduced from enormous to a reasonable size.
> For
> example, the latest community magazine comes out as a 169Mb PDF with
> 4.3.4.1
> and just 30Mb with 4.4.0.0.
>
> Every example that I've looked at shows that pictures are either stored in
> their original format, or converted to PNG (if not already PNG) and made
> larger. The difference is that 4.3.4.1 seems to do it with most images,
> whereas 4.4.0.0 with very few.
>
> When a specific image is converted by both 4.3.4.1 and 4.4.0.0, the
> resulting file is identical, which suggests that the algorithm has not
> changed; only the decision whether or not to convert has changed.
>
> As for a pattern, I've not been able to find one. As mentioned before,
> there
> seems to be no pattern as to whether the images are linked or embedded,
> large or small, resized or not.
>
> It seems random. I'm sure it's not random, but still, I find it crazy to
> modify any of the images especially as they are always made larger (why
> take
> a lossless PNG image and make it into a bigger PNG?).
>
> Paddy
>
>
>
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>
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