Advanced search for Barcode signatures

GroupDocs.Signature provides BarcodeSearchOptions class to specify different options to search for Barcode Signatures.

Here are the steps to search for barcode signatures within the document with GroupDocs.Signature:

This example shows how to make advanced search for Barcode signature in the document.

Signature signature = new Signature("sample.pdf");
BarcodeSearchOptions options = new BarcodeSearchOptions();
options.setAllPages(true); // this value is set by default
// single page number
        // setup extended search in pages setup
PagesSetup pagesSetup  = new PagesSetup() ;
// specify special barcode type to search
// specify text match type
// specify text pattern to search
// search for signatures in document
List<BarcodeSignature> signatures =, options);
System.out.print("\nSource document contains following signatures.");
for (BarcodeSignature barcodeSignature : signatures) {
    System.out.print("Barcode signature found at page " + barcodeSignature.getPageNumber() + " with type " + barcodeSignature.getEncodeType() + " and text " + barcodeSignature.getText());

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.

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