PDF/A validation

PdfAValidator checks whether a document conforms to a given PDF/A level and reports any issues found.

Usage

use PhpPdf\Reader\PdfDocumentReader;

$doc    = PdfDocumentReader::open('/path/to/file.pdf');
$result = (new PdfAValidator())->validate($doc, PdfAConformance::PdfA2b);

if ($result->isCompliant()) {
    echo "The document is PDF/A-2b compliant.\n";
} else {
    foreach ($result->getIssues() as $issue) {
        echo '[' . $issue->level->value . '] ' . $issue->message . "\n";
    }
}

Issue severity levels

PdfAIssueLevel values:

Level	Meaning
`Error`	Violates a PDF/A requirement; document is not conformant
`Warning`	Possibly non-conformant; review recommended
`Info`	Informational note, not a compliance failure

Filtering by level



$errors = array_filter(
    $result->getIssues(),
    fn($issue) => $issue->level === PdfAIssueLevel::Error,
);

PdfAValidationResult

Method	Returns
`isCompliant()`	`true` if no errors were found
`getIssues()`	`list<PdfAValidationIssue>`

Common issues detected

Missing or invalid XMP metadata
Fonts not fully embedded
Transparency used in a level that forbids it (PDF/A-1)
Missing color profile information
Encryption present (forbidden by all PDF/A levels)
Invalid PDF version marker