Okay, I don't care about existing files.
For new ones I accept the gentle nudges to stop thinking about ugly bandaid
and do it before itext even touches the file(s).
Noted.
Thanks again.
On Fri, Dec 7, 2012 at 8:38 PM, Leonard Rosenthol <[email protected]>wrote:
> If you are doing this simply during future creation – then the problem is
> easy. Check the input data and recompress as necessary.****
>
> ** **
>
> The hard problem here is fixing/changing existing PDFs. Finding images is
> well defined – you can find them. However, you don’t know what they are L.
> They don’t have identifiable names (eg. no foo.tiff reference). So unless
> you can match them via some other unique criteria (such as position, size
> or dimensions), you are blocked from any actual replacement.****
>
> ** **
>
> Leonard****
>
> ** **
>
> *From:* Benjamin Podszun [mailto:[email protected]]
> *Sent:* Friday, December 07, 2012 2:29 PM
> *To:* [email protected]
> *Subject:* Re: [iText-questions] Got an Image to insert into my PDF, need
> native (System.Drawing.Image / java.awt.Image) back****
>
> ** **
>
> Love your (often specification backed) support on anything PDF on this
> list. ****
>
> That said:****
>
> Too big to be reasonable for my usecase. If the file could very well be 80
> percent smaller without losing relevant information, I want to make that
> happen. ****
>
> I'd like to fix that on my side, since this is a shared library in a
> couple small tools. Sometimes the input is 'fine' (as in, small or in a
> format that's coming out in an acceptable way), every now and then it's
> not, like in the case here. ****
>
> The easiest (in this case: least intrusive) change to my codebase would be
> a small if-not-compressed-but-in-color workaround as above. I agree that I
> could tackle the issue on multiple levels and some might be better,
> cleaner. But everything I came up with involved more work than this idea,
> hence the question if I can make use of the Image instance at hand in my
> snippet. ****
>
> If the answer is a definite no I'll have to live with the file sizes. Or
> get back to the drawing board for a couple of things. ****
>
> On Dec 7, 2012 8:17 PM, "Leonard Rosenthol" <[email protected]> wrote:***
> *
>
> Too big for what? But yes, if you want compressed images you need do
> that ahead of time when using itext. OR you can use a variety of software
> solution to optimize the PDF after creation. (or now!) Why not just use
> one of them instead of wasting your time and effort to build something???*
> ***
>
> ****
>
> Leonard****
>
> ****
>
> *From:* Benjamin Podszun [mailto:[email protected]]
> *Sent:* Friday, December 07, 2012 12:55 PM
> *To:* [email protected]
> *Subject:* [iText-questions] Got an Image to insert into my PDF, need
> native (System.Drawing.Image / java.awt.Image) back****
>
> ****
>
> Hi.
>
> The core problem: Sometimes my PDFs are much too big. Like 20 MB for 5
> pages.
> It seems the culprit here are images that I add to/as pages, and in broken
> cases like the one above the images seem to be uncompressed in the source
> and won't be compressed by itext.
>
> Searching the net turned me towards advice to make sure that the input
> file is already (in my case) jped compressed. My solution for the size
> issue therefor seems to be to create a (suitably) compressed jpeg first and
> feed that to itext later.
>
> Unfortunately the code is built around the idea of getting a
> RandomAccessFileOrArray and more or less turning just that thing (a tiff
> with multiple pages) into a PDF.
> Pages might be compressed differently, I see no 'file global' way to
> handle the conversion. I tried plugging some code into the "get me the page
> in the Tiff" code:
>
> Previously:
>
> Image pageImage = TiffImage.GetTiffImage(imageData, pageIndex);
>
> What I try now:
>
> Image pageImage = TiffImage.GetTiffImage(imageData, pageIndex);
>
> // Compress the image if it's including color and not yet a jpeg
> if (pageImage.Bpc == 8 && !pageImage.IsJpeg())
> {
> // Need a way to get that pageImage in a format I can work with here
>
> I could add a couple workarounds to still be able to grab the original
> backend for the RandomAccessFileOrArray (imageData). But - that feels wrong.
> pageImage allows me to access the RawData, but I've no idea what it
> contains and my tries to feed that to a System.Drawing.Bitmap failed so far.
>
> Is there a way to do the inverse of
> Image.GetInstance(platformNativeImageInstance)?
>
> My platform is .Net, but I'm reasonably good at java - so itext or
> itextsharp shouldn't matter, I hope.
>
> Thanks a lot for your time,
> Ben****
>
>
>
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> https://lists.sourceforge.net/lists/listinfo/itext-questions
>
> iText(R) is a registered trademark of 1T3XT BVBA.
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>
>
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> https://lists.sourceforge.net/lists/listinfo/itext-questions
>
> iText(R) is a registered trademark of 1T3XT BVBA.
> Many questions posted to this list can (and will) be answered with a
> reference to the iText book: http://www.itextpdf.com/book/
> Please check the keywords list before you ask for examples:
> http://itextpdf.com/themes/keywords.php
>
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iText(R) is a registered trademark of 1T3XT BVBA.
Many questions posted to this list can (and will) be answered with a reference
to the iText book: http://www.itextpdf.com/book/
Please check the keywords list before you ask for examples:
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