ARCHE - external wiki

h1. PDF files

Formats for archiving:

* pdf/a-1 (a or b)

* pdf/a-2 (a, b or u)

* png (Portable Network Graphics) - only suitable for graphics, does not support EXIF metadata

Accepted formats (i.e. require further conversion by ARCHE):

* all other pdf variants

More information:

* https://www.ianus-fdz.de/it-empfehlungen/pdf-dokumente

* https://guides.archaeologydataservice.ac.uk/g2gp/TextDocs_Toc

* PDF Association: http://www.pdfa.org/

* https://www.pdf-tools.com/public/downloads/whitepapers/whitepaper-pdfa-de.pdf

Software for conversion:

* Adobe Acrobat

* LibreOffice/ OpenOffice

* MS Office

* "many more":https://lmgtfy.com/?q=convert+to+pdf%2Fa

Software for validation and conformance checking:

* verapdf (https://software.verapdf.org/)

{{collapse(How to)

# download and install program

# Single file check:

** Use verapdf-gui.bat which gives you a GUI

** Or use CLI

# Batch file check in folder with subfolders:

## Use CLI (in Windows open e.g. with windows+R then type cmd and hit enter

## Navigate to folder containing verapdf.bat

## Start verapdf with command and also write output to file for saving

<pre><code class="text">

verapdf --recurse Y:\ARCHE\staging\ThunauKamp_16335\data\Kampagne_01_1965-1984 > veraPDF_Thunau.xml

</code></pre>

More documentation:

* https://docs.verapdf.org/cli/ 

* https://docs.verapdf.org/cli/validation/ 

* https://docs.verapdf.org/cli/config/

}}

{{collapse(Meaning of Errors)

* All properties specified in XMP form shall use either the predefined schemas defined in the XMP Specification, ISO 19005-1 or this part of ISO 19005, or any extension schemas that comply with 6.6.2.3.2.

** https://github.com/veraPDF/veraPDF-validation-profiles/wiki/PDFA-Parts-2-and-3-rules#rule-6623-7

** if valid with preflight, but not with verapdf see: https://github.com/veraPDF/veraPDF-library/issues/676 -> fix unknown at the moment (2020-01-28)

}}

* Adobe Acrobat Preflight (https://software.verapdf.org/)

{{collapse(How to)

* Single: Preflight GUI; see https://helpx.adobe.com/acrobat/user-guide.html?topic=/acrobat/morehelp/preflight_acrobat_pro_.ug.js

* Batch: Create droplet; see https://helpx.adobe.com/acrobat/using/automating-document-analysis-droplets-or.html (only works for files in one folder, no subfolders)

}}