How to Search for QR Code Signatures Leave feedback
When you search for electronic signatures of QR-Code type inside a document with GroupDocs.Signature for Python via .NET, you only need to pass a list with a QrCodeSearchOptions object to the search method.
Here’s a quick guide on how to search for QR-code signatures:
- Create a new instance of the Signature class and pass the source document path as a constructor parameter.
- Instantiate the QrCodeSearchOptions object according to your requirements and specify search options.
- Call the search method of the Signature class instance and pass a list with the QrCodeSearchOptions to it. The
signaturesproperty of the returned SearchResult holds the found QrCodeSignature objects.
The code snippet below demonstrates how to search for QR-code signatures in a document using Python:
from groupdocs.signature import Signature
from groupdocs.signature.options import QrCodeSearchOptions
def search_qr_codes():
with Signature("signed.pdf") as signature:
result = signature.search([QrCodeSearchOptions()])
print(f"Found {len(result.signatures)} QR code signature(s)")
for qr_code in result.signatures:
print(f"QR code signature found at page {qr_code.page_number} "
f"with type {qr_code.encode_type.type_name} and text '{qr_code.text}'")
if __name__ == "__main__":
search_qr_codes()
signed.pdf is the sample file used in this example. Click here to download it.
Found 1 QR code signature(s)
QR code signature found at page 1 with type QR and text 'John Smith'
Here’s an example showing how to use more advanced search options for QR codes: a page to search, the QR code type (QrCodeTypes) and the text to match.
from groupdocs.signature import Signature
from groupdocs.signature.domain import QrCodeTypes, TextMatchType
from groupdocs.signature.options import QrCodeSearchOptions
def search_qr_codes_with_filters():
with Signature("signed.pdf") as signature:
options = QrCodeSearchOptions()
# Search the first page only (page numbers start at 1)
options.all_pages = False
options.page_number = 1
# Return only QR codes of the QR type...
options.encode_type = QrCodeTypes.QR
# ...whose text contains "John"
options.text = "John"
options.match_type = TextMatchType.CONTAINS
result = signature.search([options])
print(f"Found {len(result.signatures)} matching QR code signature(s)")
for qr_code in result.signatures:
print(f"Text: {qr_code.text}")
print(f"Page number: {qr_code.page_number}")
print(f"Position: X={qr_code.left}, Y={qr_code.top}")
print(f"Size: {qr_code.width}x{qr_code.height}")
print(f"Encode type: {qr_code.encode_type.type_name}")
if __name__ == "__main__":
search_qr_codes_with_filters()
signed.pdf is the sample file used in this example. Click here to download it.
Found 1 matching QR code signature(s)
Text: John Smith
Page number: 1
Position: X=270, Y=370
Size: 100x100
Encode type: QR
You may easily run the code above and see the feature in action in our GitHub examples:
Along with the full-featured Python library, we provide simple but powerful free online apps.
To sign PDF, Word, Excel, PowerPoint, and other documents you can use the online apps from the GroupDocs.Signature App Product Family.
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