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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