Get PDF Metadata

Get PDF metadata

This example reads standard document information, file status flags, and a custom metadata key.

Steps

1. Create a PdfFileInfo object for the source PDF.
2. Read the standard metadata fields such as subject, title, keywords, and creator.
3. Inspect file state flags such as whether the file is valid, encrypted, password protected, or a portfolio.
4. Read a custom metadata value with getMetaInfo.
5. Close the PdfFileInfo instance.

Java example

public static void getPdfMetadata(Path inputFile) {
    PdfFileInfo pdfInfo = new PdfFileInfo(inputFile.toString());
    System.out.println("Subject: " + pdfInfo.getSubject());
    System.out.println("Title: " + pdfInfo.getTitle());
    System.out.println("Keywords: " + pdfInfo.getKeywords());
    System.out.println("Creator: " + pdfInfo.getCreator());
    System.out.println("Creation Date: " + pdfInfo.getCreationDate());
    System.out.println("Modification Date: " + pdfInfo.getModDate());
    System.out.println("Is Valid PDF: " + pdfInfo.isPdfFile());
    System.out.println("Is Encrypted: " + pdfInfo.isEncrypted());
    System.out.println("Has Open Password: " + pdfInfo.hasOpenPassword());
    System.out.println("Has Edit Password: " + pdfInfo.hasEditPassword());
    System.out.println("Is Portfolio: " + pdfInfo.hasCollection());
    String reviewer = pdfInfo.getMetaInfo("Reviewer");
    System.out.println("Reviewer: " + (reviewer == null || reviewer.isBlank() ? "No Reviewer metadata found." : reviewer));
    pdfInfo.close();
}