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Compress existing images in PDF file |
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ross_t 
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Joined: 21 Dec 14 Location: Earth Status: Offline Points: 6 |
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 Topic: Compress existing images in PDF filePosted: 02 Mar 18 at 6:05PM |
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Hi,
I wish to apply compression to the existing images in PDF file. Is it possible for me to set the Image Quality and Resolution for the existing images in a given PDF file and then save the resulting PDF as a new file without assembling the entire PDF file manually? Waiting for your reply... Cheers, Ross. |
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Ingo
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Joined: 29 Oct 05 Status: Offline Points: 3524 |
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Posted: 02 Mar 18 at 7:27PM |
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Hi Ross,
for already existing images there's no one-click-function in QuickPDF. You can do similar things with extracting images from pdf-documents: This... http://www.quickpdf.org/forum/topic376&KW=swb1.html or that... http://www.debenu.com/kb/extract-images-from-pdf-files-as-the-appropriate-image-type/ Work on them with a third party tool... and replace the existing images with the new smaller ones: http://www.debenu.com/docs/pdf_library_reference/ReplaceImage.php You'll find more here: http://www.debenu.com/docs/pdf_library_reference/Search.php |
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Cheers,
Ingo |
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mLipok
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Joined: 23 Apr 14 Location: Poland, Zabrze Status: Offline Points: 453 |
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Posted: 03 Mar 18 at 1:01PM |
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Ingo what about :
http://www.debenu.com/docs/pdf_library_reference/CompressImages.php ? |
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Here you can find description how to test my examples:
http://www.quickpdf.org/forum/forum_posts.asp?TID=2932&PID=12600&title=drawcapturedpagematrix-matrix-howto#12600 |
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Ingo
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Joined: 29 Oct 05 Status: Offline Points: 3524 |
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Posted: 03 Mar 18 at 2:58PM |
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Hi :)
i think "... added to the document..." (from the reference) means "added in this moment" and not "being already inside". Edited by Ingo - 03 Mar 18 at 2:58PM |
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Cheers,
Ingo |
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ross_t
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Joined: 21 Dec 14 Location: Earth Status: Offline Points: 6 |
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Posted: 03 Mar 18 at 6:18PM |
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Thanks so much guys for your help. I will try out the "extract image, compress and replace" algorithm. I'm sure it will work good.
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mLipok
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Joined: 23 Apr 14 Location: Poland, Zabrze Status: Offline Points: 453 |
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Posted: 04 Mar 18 at 10:02PM |
Oh I see. Maybe we can combine: http://www.debenu.com/kb/extract-images-from-pdf-files-as-the-appropriate-image-type/ http://www.debenu.com/docs/pdf_library_reference/ReplaceImage.php http://www.debenu.com/docs/pdf_library_reference/CompressImages.php I mean extract, + replace with the same data but + CompressImages I hope CompressImages toogether with ReplaceImage should made the trick..... but I never tested this before. Edited by mLipok - 04 Mar 18 at 10:03PM |
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Here you can find description how to test my examples:
http://www.quickpdf.org/forum/forum_posts.asp?TID=2932&PID=12600&title=drawcapturedpagematrix-matrix-howto#12600 |
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mLipok
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Joined: 23 Apr 14 Location: Poland, Zabrze Status: Offline Points: 453 |
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Posted: 04 Mar 18 at 10:05PM |
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I also staying in hope that we can use:
OriginalImageIDint32 = NewImageIDint32 In such case we should be able to do this without any file/disc operation. |
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Here you can find description how to test my examples:
http://www.quickpdf.org/forum/forum_posts.asp?TID=2932&PID=12600&title=drawcapturedpagematrix-matrix-howto#12600 |
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mLipok
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Joined: 23 Apr 14 Location: Poland, Zabrze Status: Offline Points: 453 |
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Posted: 04 Mar 18 at 11:02PM |
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more discussion here:
http://www.quickpdf.org/forum/reduce-pdf-file-size_topic2846.html http://www.quickpdf.org/forum/exported-images-original-file-size_topic2151.html http://www.quickpdf.org/forum/to-reduce-the-pdf-file-size_topic1404.html http://www.quickpdf.org/forum/reducing-pdf-file-size_topic792.html http://www.planetpdf.com/enterprise/article.asp?ContentID=reducing_pdf_file_size_ http://www.debenu.com/kb/can-i-compress-my-pdf/ http://www.quickpdflibrary.com/faq/reduce-file-size.php http://www.quickpdflibrary.com/faq/compressing-pdf-files.php http://www.quickpdflibrary.com/faq/resampling-a-pdf-to-reduce-file-size.php |
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Here you can find description how to test my examples:
http://www.quickpdf.org/forum/forum_posts.asp?TID=2932&PID=12600&title=drawcapturedpagematrix-matrix-howto#12600 |
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mLipok
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Joined: 23 Apr 14 Location: Poland, Zabrze Status: Offline Points: 453 |
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Posted: 02 May 18 at 2:16PM |
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Any body know if QuickPDF is able to compress PDF Files with MRC ?
https://en.wikipedia.org/wiki/Mixed_raster_content |
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Here you can find description how to test my examples:
http://www.quickpdf.org/forum/forum_posts.asp?TID=2932&PID=12600&title=drawcapturedpagematrix-matrix-howto#12600 |
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Ingo
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Joined: 29 Oct 05 Status: Offline Points: 3524 |
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Posted: 03 May 18 at 10:28AM |
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QP aren't able to use MRC.
Relevant images for mrc-compression need a special internal data structure. These special internal data structure isn't taken into account regarding the image handling in the QP-functionalities. |
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Cheers,
Ingo |
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mLipok
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Joined: 23 Apr 14 Location: Poland, Zabrze Status: Offline Points: 453 |
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Posted: 04 May 18 at 7:57AM |
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what a pity ...
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Here you can find description how to test my examples:
http://www.quickpdf.org/forum/forum_posts.asp?TID=2932&PID=12600&title=drawcapturedpagematrix-matrix-howto#12600 |
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mLipok
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Joined: 23 Apr 14 Location: Poland, Zabrze Status: Offline Points: 453 |
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Posted: 04 May 18 at 8:04AM |
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Here too... I just posted Feature Request
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Here you can find description how to test my examples:
http://www.quickpdf.org/forum/forum_posts.asp?TID=2932&PID=12600&title=drawcapturedpagematrix-matrix-howto#12600 |
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noramila
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Joined: 29 Aug 23 Location: India Status: Offline Points: 5 |
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Posted: 08 Nov 24 at 11:12AM |
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To compress images in a PDF, extract and compress the images, then replace them in the PDF. You can use tools like Debenu PDF library or QuickPDF. And For different image format such as JPEG, PNG, WEBP, etc you can also try online image compressor tool. Edited by noramila - 09 Nov 24 at 9:06AM |
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Ingo wrote: