PDА → PDF/X → PDА file size

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Jensen Head
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Posts: 412
Joined: Mon Sep 13, 2021 8:12 am

PDА → PDF/X → PDА file size

Post by Jensen Head »

We are forced to convert PDF/X documents due to the limitations of one of the tool used in pre-preparation of documents. Saving a document from regular PDF to PDF/X [1] increases the size by an average of 133%, i.e. more than twice. This was a test of 200 recognized scanned documents ranging in size from one to 50 pages. However, when converting back, the size of the files almost does not change.

Forced conversion of all objects to the sRGB IEC61966-2.1 color space had almost no effect on the document size.
What would you recommend is a way to return documents to their original size, which was before converting to PDF/X?

Upd. I tried using the "Discard Special PDF-Standard" [2] tool, selecting "Choose PDF standard to discard: All standards", but the PDF/X file size was the same again.

[1]:

Code: Select all

GTS_PDFXVersion = PDF/X-4
- Tag 'x:xmpmeta/rdf:RDF/rdf:Description/pdfx:GTS_PDFXVersion'
[2] "Discards special PDF-standard information, such as PDF/X, PDF/A, PDF/E, etc."
Attachments
3. PDF-X to PDF.pdf
(450.86 KiB) Downloaded 44 times
2. PDF to PDF-X.pdf
(450.51 KiB) Downloaded 42 times
1. PDF.pdf
(31.32 KiB) Downloaded 45 times
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TrackerSupp-Daniel
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Posts: 8371
Joined: Wed Jan 03, 2018 6:52 pm

Re: PDА → PDF/X → PDА file size

Post by TrackerSupp-Daniel »

Hello, Jensen Head

Unfortunately special standards have specific requirements of the content within, and converting to those standard converts most content to match those rules where applicable. Conversely, there is no way to identify which content was converted, or a method to convert these items back out of this special standard.
The "discard" function you mention simply removes the flag in the document indicating that it is using a special standard (which in turn informs our software that it can create new content items without doing any extra conversion from now on), it does not revert the changes that are made during the initial conversion.

Kind regards,
Dan McIntyre - Support Technician
Tracker Software Products (Canada) LTD

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