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Python Add barcode, QR code in PDF

Popularity：226 ℃/2024-09-03 16:47:06

Adding barcodes to PDFs is a common requirement, especially when automated processing, tracking or retrieval of PDF files is needed. As a machine-readable identifier, barcodes in PDFs can contain various types of information, such as the document's unique identifier, version number, date, and so on. Here is an article on how to add barcode or QR code to PDF using Python.

 

Required Python libraries

for Python Library: Used to draw barcodes directly in PDF files, supports a variety of 1D barcode types, such as Codabar, Code11, Code32, Code39, Code93 and so on.
Since for Python only supports the creation of one-dimensional barcodes, if we need to add two-dimensional barcodes to the PDF, we also need to combine the for PythonCoop.

These two Python libraries can be installed using the pip command below:

pip install
pip install

 

Python Add Barcodes to PDF Documents

for Python library provides different classes to represent different one-dimensional barcode types, the example will demonstrate how to use the library to draw common Codabar and Code39 barcodes in PDF.

Main Steps:

  1. Create a new PDF document and add pages;
  2. Draw text on PDF pages;
  3. establishPdfCodabarBarcode object, and then use itsDraw() method draws the Codabar barcode to the specified location on the page.
  4. establishPdfCode39Barcode object, and then use itsDraw() method draws the Code39 barcode to the specified location on the page.
  5. Save the PDF file.


Python code:

from  import *
from  import *

# Create PDF files
pdf = PdfDocument()
# Add Page
page = (PdfPageSize.A4())

y = 20.0
# Drawing text on a page
font = PdfTrueTypeFont("Arial", 12.0, , True)
text = PdfTextWidget()
 = font
 = "Codabar:"
result = (page, 0.0, y)
page = 
y =  + 2

# Create a PdfCodabarBarcode object and draw the Codabar barcode to the page
Codabar = PdfCodabarBarcode("00:12-3456/7890")
 = 1.0
 = True
 = True
 = 
 = PdfRGBColor(Color.get_Green())
(page, PointF(0.0, y))
y =  + 8

# Drawing text on a page
 = "Code39:"
result = (page, 0.0, y)
page = 
y =  + 2

# Create a PdfCode39Barcode object and draw the Code39 barcode to the page
Code39 = PdfCode39Barcode("ABC-012689")
 = 1.0
 = 
 = PdfRGBColor(Color.get_Green())
(page, PointF(0.0, y))

# Save PDF document
("Add Barcode to PDF.pdf")
()

 

 

Python Add QR Code to PDF Document

In this example, we need to use the for Python library to generate the QR code image, and then use the for Python library to draw the QR code image to the PDF page.

Main Steps:

  1. establishBarcodeSettings object, and then use itsType property sets the barcode type to 2D QRCode
  2. Set the data, width, error correction level, and whether to display text for the QR code.
  3. Based on the above settings createBarCodeGenerator object, and then use itsGenerateImage() Method to generate QR code image
  4. Save the generated QR code image as a PNG image;
  5. Create a PDF document and add a page
  6. Load the QR code image and use theDrawImage() Methods to draw the QR code to a specified location on the PDF page
  7. Save the PDF document.

 

Python code:

from  import *
from  import *
from  import *

# Create BarcodeSettings object
settings = BarcodeSettings()

# Set barcode type to QRCode
 = 
# Set barcode data, width, error correction level, etc.
 = "ABCD12345"
settings.Data2D = "ABCD12345"
 = 2
 = 
 = True

# Generate QR code image
barCodeGenerator = BarCodeGenerator(settings)
QRimage = ()

# Save QR code image as PNG file
with open("", "wb") as file:
    (QRimage)

# Create PDF documents
pdf = PdfDocument()
# Add Page
page = ()

# Drawing QR code images onto PDF pages
pdfImage = ("")
(pdfImage, 0.0, 20.0)

# Save PDF document
("Adding QR Code in Pdf.pdf")
()

 

for Python library supports dozens of one-dimensional and two-dimensional bar code types, so for other for Python library does not support one-dimensional bar code, we can also refer to Example 2 provides a combination of methods to use these two libraries, Mr. into the specified bar code image, and then draw to the PDF page.

 

* For warning messages in the generated documents, you can click to request a one-month free license trial on your own:

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