Decrypt PDF File

Decrypt PDF file

Use this workflow when you have the owner password and need to remove security from a PDF.

Steps

1. Create a PdfFileSecurity instance.
2. Bind the encrypted PDF with bindPdf.
3. Call decryptFile or tryDecryptFile with the owner password.
4. Save the output if decryption succeeds.
5. Close the security object.

Java examples

public static void decryptPdfWithOwnerPassword(Path inputFile, Path outputFile) {
    PdfFileSecurity fileSecurity = new PdfFileSecurity();
    fileSecurity.bindPdf(inputFile.toString());
    fileSecurity.decryptFile("owner_password");
    fileSecurity.save(outputFile.toString());
    fileSecurity.close();
}

public static void tryDecryptPdfWithoutException(Path inputFile, Path outputFile) {
    PdfFileSecurity fileSecurity = new PdfFileSecurity();
    fileSecurity.bindPdf(inputFile.toString());
    if (fileSecurity.tryDecryptFile("owner_password")) {
        fileSecurity.save(outputFile.toString());
    } else {
        System.out.println("Decryption failed. Check password or document security.");
    }
    fileSecurity.close();
}