First PDF/X ISO standard
published 20 years ago

In December 2001, the International Organization for Standardization (ISO) published the first PDF/X standard PDF/X-1a (ISO 15930-1:2001).

It is based on PDF 1.3 (no transparency) and allows CMYK and spot colors. This standard has been regularly extended and is still valid today.

Unfortunately, many users are stuck with PDF/X-1a (resp. PDF/X-3). They ignore the fact that technologies in artwork production have evolved in recent years (e.g. transparencies, layers, etc.). This is why the PDF/X-4 standard (ISO 15930-7:2008) has been in existence since 2008. This was slightly revised in 2010 (ISO 15930-7:2010) and allows native transparencies, among other things.

Ghent Workgroup launches Ghent PDF Output Suite 5 Conformance Certification

The Ghent Workgoup (GWG) has officially announced the availability of the Ghent PDF Output Suite 5 Conformance Certification. As the chair of the GWG Process Control subcommittee, I have been preparing the project over the last few months.

The new service is aimed at print service providers. With this certification they can prove that their PDF workflow is compliant with the PDF/X-4 standard (ISO 15930-7:2010):

Read more…

PressPDF: Simple online checking and
correction of PDF artwork

PressPDF is an online portal for checking and correcting PDF artwork. 10 checks and 18 corrections are offered. Files up to a maximum of 500 MB can be uploaded.

During testing, I noticed that spot colors are not always recognized and when converting from RGB to CMYK, SWOP is always used as the target color space instead of the Output Intent. Furthermore, color conversion of a PDF/X file leads to loss of PDF/X conformance.

So care must be taken with PressPDF corrections…!