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A Text electronic signature is an arbitrary text that is added to a document in a native way depending on the type of the document. GroupDocs.Signature provides the text signature feature and allows customizing a wide range of text settings - from font name, size and color to alignment, borders, shadow effects etc. This is how a text signature may look like:
Let’s try to add a text signature to a PDF programmatically using Python.
To manipulate text signatures programmatically GroupDocs.Signature for Python via .NET provides the TextSignOptions class and the whole workflow is as easy as follows:
- Create a new instance of the Signature class and pass the source document path as a constructor parameter.
- Instantiate the TextSignOptions object according to your requirements and specify the signature options.
- Call the Sign method of the Signature class instance and pass the TextSignOptions to it.
This example shows how to add a text signature to a document using Python:
from groupdocs.signature import Signature
from groupdocs.signature.options import TextSignOptions
from groupdocs.signature.domain import SignatureFont
from groupdocs.pydrawing import Color
def sign_with_text_signature():
with Signature("sample.pdf") as signature:
# Create text signature options
options = TextSignOptions("John Smith")
# Set signature position and size
options.left = 100
options.top = 400
options.width = 200
options.height = 50
# Set text color and font
options.fore_color = Color.red
font = SignatureFont()
font.family_name = "Arial"
font.size = 24
options.font = font
# Sign the document and save the result
result = signature.sign("signed_text.pdf", options)
print(f"Signed with {len(result.succeeded)} text signature(s)")
if __name__ == "__main__":
sign_with_text_signature()
sample.pdf is the sample file used in this example. Click here to download it.
Binary file (PDF, 122 KB)
You can customize the text signature further with additional options: alignment and margins, font style, background, border, rotation and transparency. When an alignment is set, it replaces the left or top coordinate, and the margin offsets the signature from the page edge.
from groupdocs.signature import Signature
from groupdocs.signature.options import TextSignOptions
from groupdocs.signature.domain import (
Background, Border, DashStyle, HorizontalAlignment, Padding,
SignatureFont, TextSignatureImplementation, VerticalAlignment)
from groupdocs.pydrawing import Color
def sign_with_text_signature_advanced():
with Signature("sample.pdf") as signature:
options = TextSignOptions("John Smith")
# Put the signature in the bottom right corner of the page
options.width = 220
options.height = 60
options.horizontal_alignment = HorizontalAlignment.RIGHT
options.vertical_alignment = VerticalAlignment.BOTTOM
options.margin = Padding(right=40, bottom=60)
# Font style and text color
font = SignatureFont()
font.family_name = "Arial"
font.size = 20
font.bold = True
font.italic = True
options.font = font
options.fore_color = Color.dark_blue
# Background, border, rotation and transparency
background = Background()
background.color = Color.light_yellow
options.background = background
border = Border()
border.color = Color.dark_blue
border.dash_style = DashStyle.DASH
border.weight = 2
options.border = border
options.rotation_angle = -10
options.transparency = 0.2
# Render the text as an image, which also draws the border on PDF pages
options.signature_implementation = TextSignatureImplementation.IMAGE
result = signature.sign("signed_text_advanced.pdf", options)
print(f"Signed with {len(result.succeeded)} text signature(s)")
if __name__ == "__main__":
sign_with_text_signature_advanced()
sample.pdf is the sample file used in this example. Click here to download it.
Binary file (PDF, 53 KB)
This guide explains how to add text-based signatures to documents with GroupDocs.Signature for Python via .NET. It covers configuring text properties such as font, color, size, and position, and applying the text signature to a document. The signed document is then saved with the added text signature.
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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