[Scribus] Image compression in PDF export

[PLinnell]

On Tuesday 04 April 2006 23:16, Wolfgang Dobler wrote:
> I think the PDF export dialog could need some improvements to make
> production of web-oriented (i.e. compact) PDF easier.
>
> If I export a document with a few JPEG images to PDF and click
> `Resample images', there are two points that are irritating.
>
> 1. Images are also `upsampled' (refined) if they originally had a
> lower resolution than what I choose here. I think this is rarely
> useful and if it needs to be possible, there should at least be a
> radio button `Never upsample' [replace by word that really exists]
> that is on by default.
>      In an ideal world, this situation would never occur, but in
> reality you have to deal with low-resolution photos from you
> contributors all of the time.
>
> 2. The default settings for compression are `Compression Method:
>    Automatic' and `Compression Quality: Maximum'.
>      The tooltip for `Automatic' tells me quite convincingly that
> Scribus knows what is good for me. But it doesn't, because as soon
> as I resample, the compression is lossless and so the resulting PDF
> file gets huge.
>
>    For web-oriented PDF, good defaults would be `Compression
> Method: Lossy - JPEG' and probably `Quality: High'.
>      To distinguish this from the maximum-quality settings
> desirable for print-oriented PDF, I see two options:
>    (a) change the defaults as soon as resampling is activated
> (which you would not normally do for print-shop PDF).
>    (b) add a radio-button or menu list where the user can choose
> between `web-oriented (compact)' and `print-oriented (best
> quality)' settings. If you go for `web-oriented', the compression
> method and quality get set to the defaults given above.
>
> I know that Scribus focuses more on print-oriented output, but
> given that all the pieces for efficient image compression are
> there, it is a shame that users need to to do `strange things' to
> get compact PDF out of Scribus.
>   With `strange things', I mean e.g. to not believe the tooltip
> when it says it knows what it is doing. I know other people who had
> a hard time figuring the JPEG compression settings out, and it also
> took myself (who likes to play and experiment) far too long.
>
>
> Opinions?
>
> Should I post this as an enhancement request (might take a while as
> I leave for holidays tomorrow)?
>
>
> W o l f g a n g
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Yes, Please file this on http://bugs.scribus.net

Peter