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From TvT <tvtre...@nepatec.de>
Subject Re: PDF size reduction
Date Wed, 17 May 2017 06:39:56 GMT
Another possibility is to post process your PDF. We for instance first
generate the PDF and afterwards use some other PDF library to shrink the
images and remove unused objects and other stuff...
If something is possible with a PDF in question you may try out with
acrobat - there are options to optimize and shrink your PDF. If there is no
reduction in file size with those options you may already have the perfect
PDF without any overhead ;-)

2017-05-16 22:10 GMT+02:00 Peter Hansson <peterhansson_se@yahoo.com.invalid>
:

> Hi Spoorthi
>
> Another angle:
> I've found SVGs to be MUCH MORE efficient in terms of space usage. Try to
> see if you have those logos in SVG format instead and see if it helps.
>
> The added bonus of doing this is that image still looks nice even when the
> end-user is using the zoom function when looking at the PDF document.
>
> SVGs cannot do everything that say JPEG can. For example Apache FOP
> doesn't have support for SVGs that use gradients. However, I've found that
> most corporate logos aren't that advanced and they typically work well with
> SVG format.
>
> Give it a try.
> For example something like this:
>
>  <fo:external-graphic  .... src="../my-company-logo.svg"/>
>
>
> Peter
>
>
>
> On Tuesday, May 16, 2017 6:55 PM, Frank Hirsch <frank.hirsch@mac.com>
> wrote:
>
>
> Personally I use Apache FOP for some projects - but I am not quite an
> expert when it comes to Java…
>
> As far as I understand you may want to adjust the image
> resolution/compression to shrink the size of the files used in you FO - but
> I am not sure if this can be done automatically using a different image
> handling subsystem (https://xmlgraphics.apache.org/fop/0.95/graphics.html).
> Changing the color space may only affect the color profile/representation,
> but I don’t think this will preprocess the image size at all (sRGB is just
> a smaller gamut than Adobe RGB and RGB) - you may just get a different
> representation of colors outside the given gammut!
>
> From my perspective, it’s the same thing as placing an image in a layout
> software: the image will be used „as is“. Only when it comes to write the
> PDF you may have the ability to „donwsample“ all images to a given
> resolution relative to the size in the layout…
>
> - One solution might be to adjust the images to a proper size and
> compression accordingly to the layout
> - Alternatively you may „optimize“ the PDF for internet use: resample,
> compress and remove duplicates (images used multiple times)
>
> Just a few ideas which may help if there is no native solution in Apache
> FOP ;-)
> If there is no working solution in FOP, I may send you a link to a
> freeware to optimize the final PDF
>
> The FOP guys may forgive me if I am completely wrong ;-)
>
> Best,
> Frank
>
> Am 16.05.2017 um 17:50 schrieb spoorthi myneni - TECRA <
> spoorthi.myneni@tecra.com>:
>
> Hi Team,
>
> We have a requirement to reduce the size of the PDF size from
> 200Kb(approximately) to as less as possible. There are 5 images in the PDF
> that I am using.
>
> PDF size without images is coming up to 40Kb.
> Each Image size(jpegs): CCX logo- 60Kb, 3 small images: 18kb each, SMS
> logo - 50Kb approximately.
>
> The PDF size is increased as mush as the image size is. Is there a way for
> us to optimize the image size or the PDF size in FO?
> I have already set this property: </disable-srgb-colorspace>true
> </disable-srgb-colorspace>
>
>
> Please let me know if there are any techniques to achieve this. Has there
> been any enhancements done in the FOP 2.0?
>
> Thank you,
> Spoorthi
>
>
>
>

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