Difference between revisions of "Workflow:PDF/A validation and metadata extraction"
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| − | {{ | + | {{Infobox COW |
|name=PDF/A validation and metadata extraction | |name=PDF/A validation and metadata extraction | ||
|status=Experimental | |status=Experimental | ||
| − | |tools=UKWA search interface | + | |tools=GNU Wget, VeraPDF, UKWA search interface, XMLstarlet, Excel |
| − | |input= Corpus of PDF/A files | + | |input=Corpus of PDF/A files |
| − | |output= CSV with validationresult and metadata | + | |output=CSV with validationresult and metadata |
| − | |organisation= | + | |organisation=Digital Preservation Coalition |
| + | |organisationurl=http://dpconline.org/ | ||
}} | }} | ||
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==Workflow description== | ==Workflow description== | ||
<!-- Describe your workflow here. If necessary add a diagram --> | <!-- Describe your workflow here. If necessary add a diagram --> | ||
Revision as of 13:52, 23 April 2021
Workflow description
- UKWA search interface (create URL list of PDF/A files in UKWA) ->
- GNU_Wget (download files from IA, to create the test corpus) ->
- veraPDF (validates and extracts metadata from test corpus) ->
- XMLstarlet (process XML, extract useful fields into a CSV) ->
- Excel (view and analyse results in spreadsheet form)
The workflow begins with creation of a corpus of test files which is constructed using the UK Web Archive search interface (for example see this). The result is a list of URLs. These are fetched with Wget to create a large test corpus of predominantly PDF/A files. VeraPDF is then used to validate and extract metadata for each file. XMLstarlet is applied to extract fields of interest from the resulting XML creating a CSV. The CSV is then imported to Excel for analysis.
Purpose, context and content
This is a basic workflow for ad-hoc investigation of a set of PDF/A files. This is a very simple, manual, workflow that was used for testing purposes as part of the development of veraPDF, and is described further in this blog post: http://dpconline.org/blog/pdf-eh-redux-putting-verapdf-into-practice
Evaluation/Review
The workflow was useful in that it helped to identify a number of bugs in veraPDF that have since been fixed. The workflow as is provides a very basic method of investigating PDF files, perhaps where some troubleshooting is required.
Prwheatley (talk) 11:51, 8 February 2017 (UTC)