The version of a PDF file does not mandate the features it must contain. If you have a PDF 2.0 file with PDF 2.0 specific features then yes, you will have to use PDF/A-4 if preservation of those features is important, since PDF/A-4 files must always have a "%PDF-2.x" header.
But PDF 2.0 files may not have any PDF 2.0 features (it may only contain simple content compatible with PDF 1.1!) so you could theoretically "back-convert" to PDF 1.x and then use PDF/A-2 or PDF/A-3 (or even PDF/A-1) depending on the file and your needs. Both PDF/A-2 and PDF/A-3 for example must have headers "%PDF-1.x" for x=0...7. Of course software needs to know how to do this correctly! Please also note that ISO 19005-4:2020 PDF/A-4 is currently undergoing a dated revision update at ISO. > -----Original Message----- > From: Gili Tzabari <[email protected]> > Sent: Friday, November 10, 2023 12:55 PM > To: [email protected] > Subject: Re: PDF 2.0, PDF/A-4 support > > I am no PDF expert, so please bear with me :) > > If I understand you correctly, dropping preflight means that you're > dropping PDF verification. And you're saying that VeraPDF provides PDF > verification so nothing is really lost. > > The only part I didn't understand was: > > > You can create PDF/A-4 files like you can create PDF/A-1b files. > > Doesn't PDF/A-4 files require PDF 2.0 support? Don't they have a > different file structure than PDF/A-1b files? > > Thank you, > Gili > > On 2023-11-08 11:34, Tilman Hausherr wrote: > > We don't have roadmaps. If you need a PDF 2.0 feature, tell us which > > one and why. PDF/A-4 isn't a topic because preflight isn't developed > > further. Use VeraPDF instead. You can create PDF/A-4 files like you > > can create PDF/A-1b files. > > > > Tilman > > > > On 08.11.2023 00:15, Gili Tzabari wrote: > >> Hi, > >> > >> I noticed that PDFBox 3.0 was recently released, but I can't tell > >> what the status/roadmap is for PDF 2.0 and PDF/A-4 support. > >> > >> Can someone in the know please let me know where we stand? > >> > >> Thanks, > >> Gili > >> > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: [email protected] > >> For additional commands, e-mail: [email protected] > >> > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [email protected] > > For additional commands, e-mail: [email protected] > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
