PDF/UA-1 rule 6.1-1: File header … does not match the pattern %PDF-1.n, where 'n' is a single digit number between 0 and 7
Not fixed automaticallysyntax
What veraPDF reports
File header %1 does not match the pattern %PDF-1.n, where 'n' is a single digit number between 0 and 7
veraPDF rule 6.1-1 = ISO 14289-1:2014 clause 6.1, test 1, checked on PDF object CosDocument.
What the requirement says
The file header shall consist of "%PDF-1.n" followed by a single EOL marker, where 'n' is a single digit number between 0 (30h) and 7 (37h)
Can it be fixed automatically?
Not fixed automatically. This failure needs the authoring tool or manual remediation; the automatic fix does not change it.
How to fix it by hand
This is a low-level PDF syntax requirement; it is usually fixed by exporting the file again with a current PDF producer or by saving it through a PDF editor.
Check your PDF now (free)
Upload the PDF: veraPDF lists every failed PDF/UA-1 rule, our fix runs, and veraPDF checks the fixed file again — you see “N failed rules before → M after”
before deciding. The fixed file costs 19 € (excl. VAT); the check is free. We never call a file “accessible” or “compliant”.