Verify QR-code signatures

GroupDocs.Signature provides different properties in QrCodeVerifyOptions class to specify verification of QR-code signatures.

Here are the steps to verify QR-code signature within the document with GroupDocs.Signature:

This example shows how to verify QR-code signature in the document. See VerificationResult

using (Signature signature = new Signature("sample.pdf"))
    QrCodeVerifyOptions options = new QrCodeVerifyOptions()
        // specify if all pages shoudl be verified
        AllPages = false,
        PagesSetup = new PagesSetup() {  FirstPage = false, LastPage = true, OddPages = false, EvenPages = true },
        // specify text pattern
        Text = "John",
        // specify verification text pattern
        MatchType = TextMatchType.Contains,
        // specify types of QR code to verify
        EncodeType = QrCodeTypes.QR
    // verify document signatures
    VerificationResult result = signature.Verify(options);
    if (result.IsValid)
        Console.WriteLine("\nDocument was verified successfully!");
        Console.WriteLine("\nDocument failed verification process.");

More resources

GitHub Examples

You may easily run the code above and see the feature in action in our GitHub examples:

Free Online App

Along with full-featured .NET library we provide simple, but powerful free Apps.

You are welcome to eSign PDF, Word, Excel, PowerPoint documents with free to use online GroupDocs Signature App.