Generate PDF From HTML And Add Barcode - Python
PDF from HTML (HTML to PDF) sample in Python demonstrating ‘Generate PDF From HTML And Add Barcode’
GeneratePdfFromHtmAndAddBarcode.py
import os
import json
import requests # pip install requests
# The authentication key (API Key).
# Get your own by registering at https://app.pdf.co
API_KEY = "****************************************************"
# Base URL for PDF.co Web API requests
BASE_URL = "https://api.pdf.co/v1"
### STEP 1: GENERATE BARCODE ###
# Result file name
ResultFile = ".\\barcode.png"
# Barcode type. See valid barcode types in the documentation https://apidocs.pdf.co
BarcodeType = "Code128"
# Barcode value
BarcodeValue = "qweasd123456"
# Barcode Source File
SourceFile = ResultFile
def main(args = None):
# Generate Barcode
generateBarcode(ResultFile)
# Upload Barcode to Cloud
uploadedBarcodeUrl = uploadFile(SourceFile)
# Convert HTML to PDF
GeneratePDFFromHtml(SampleHtml, DestinationFile)
# Upload PDF to Cloud
uploadedPdfUrl = uploadFile(SourcePdfFile)
# PDF with Barcode Output
addImageToExistingPdf(uploadedPdfUrl, uploadedBarcodeUrl, DestinationFile)
def generateBarcode(destinationFile):
"""Generates Barcode using PDF.co Web API"""
# Prepare requests params as JSON
# See documentation: https://apidocs.pdf.co
parameters = {}
parameters["name"] = os.path.basename(destinationFile)
parameters["type"] = BarcodeType
parameters["value"] = BarcodeValue
# Prepare URL for 'Barcode Generate' API request
url = "{}/barcode/generate".format(BASE_URL)
# Execute request and get response as JSON
response = requests.post(url, data=parameters, headers={ "x-api-key": API_KEY })
if (response.status_code == 200):
json = response.json()
if json["error"] == False:
# Get URL of result file
resultFileUrl = json["url"]
# Download result file
r = requests.get(resultFileUrl, stream=True)
if (r.status_code == 200):
with open(destinationFile, 'wb') as file:
for chunk in r:
file.write(chunk)
#print(f"Result file saved as \"{destinationFile}\" file.")
else:
print(f"Request error: {response.status_code} {response.reason}")
else:
# Show service reported error
print(json["message"])
else:
print(f"Request error: {response.status_code} {response.reason}")
### STEP 2: UPLOAD FILE AS TEMPORARY FILE ###
def uploadFile(fileName):
"""Uploads file to the cloud"""
# 1. RETRIEVE PRESIGNED URL TO UPLOAD FILE.
# Prepare URL for 'Get Presigned URL' API request
url = "{}/file/upload/get-presigned-url?contenttype=application/octet-stream&name={}".format(
BASE_URL, os.path.basename(fileName))
# Execute request and get response as JSON
response = requests.get(url, headers={ "x-api-key": API_KEY })
if (response.status_code == 200):
json = response.json()
if json["error"] == False:
# URL to use for file upload
uploadUrl = json["presignedUrl"]
# URL for future reference
uploadedFileUrl = json["url"]
# 2. UPLOAD FILE TO CLOUD.
with open(fileName, 'rb') as file:
requests.put(uploadUrl, data=file, headers={ "x-api-key": API_KEY, "content-type": "application/octet-stream" })
return uploadedFileUrl
else:
# Show service reported error
print(json["message"])
else:
print(f"Request error: {response.status_code} {response.reason}")
return None
### STEP 3: CONVERT HTML TO PDF ###
# HTML template
file_read = open(".\\sample.html", mode='r', encoding= 'utf-8')
SampleHtml = file_read.read()
file_read.close()
# Destination PDF file name
DestinationFile = ".\\result.pdf"
def GeneratePDFFromHtml(SampleHtml, destinationFile):
"""Converts HTML to PDF using PDF.co Web API"""
# Prepare requests params as JSON
# See documentation: https://apidocs.pdf.co/?#1-json-pdfconvertfromhtml
parameters = {}
# Input HTML code to be converted. Required.
parameters["html"] = SampleHtml
# Name of resulting file
parameters["name"] = os.path.basename(destinationFile)
# Set to css style margins like 10 px or 5px 5px 5px 5px.
parameters["margins"] = "5px 5px 5px 5px"
# Can be Letter, A4, A5, A6 or custom size like 200x200
parameters["paperSize"] = "Letter"
# Set to Portrait or Landscape. Portrait by default.
parameters["orientation"] = "Portrait"
# true by default. Set to false to disable printing of background.
parameters["printBackground"] = "true"
# If large input document, process in async mode by passing true
parameters["async"] = "false"
# Set to HTML for header to be applied on every page at the header.
parameters["header"] = ""
# Set to HTML for footer to be applied on every page at the bottom.
parameters["footer"] = ""
# Prepare URL for 'HTML To PDF' API request
url = "{}/pdf/convert/from/html".format(
BASE_URL
)
# Execute request and get response as JSON
response = requests.post(url, data=parameters, headers={ "x-api-key": API_KEY })
if (response.status_code == 200):
json = response.json()
if json["error"] == False:
# Get URL of result file
resultFileUrl = json["url"]
# Download result file
r = requests.get(resultFileUrl, stream=True)
if (r.status_code == 200):
with open(destinationFile, 'wb') as file:
for chunk in r:
file.write(chunk)
#print(f"Result file saved as \"{destinationFile}\" file.")
else:
print(f"Request error: {response.status_code} {response.reason}")
else:
# Show service reported error
print(json["message"])
else:
print(f"Request error: {response.status_code} {response.reason}")
### STEP 4: UPLOAD PDF AS TEMPORARY FILE ###
# Source PDF file
SourcePdfFile = DestinationFile
### STEP 5: ADD BARCODE TO PDF ###
# Destination PDF file name
DestinationFile = ".//result.pdf"
# Image params
Type = "image"
X = 400
Y = 20
Width = 150
Height = 50
def addImageToExistingPdf(PdfUrl, barcodeUrl, destinationFile):
import json
"""Add image using PDF.co Web API"""
# Prepare requests params as JSON
# See documentation: https://apidocs.pdf.co
payload = json.dumps({
"name": os.path.basename(destinationFile),
"url": PdfUrl,
"images": [{
"url": barcodeUrl,
"x": X,
"y": Y,
"width": Width,
"height": Height
}]
})
# Prepare URL for 'PDF Edit' API request
url = "{}/pdf/edit/add".format(BASE_URL)
# Execute request and get response as JSON
response = requests.post(url, data=payload, headers={ "x-api-key": API_KEY })
if (response.status_code == 200):
json = response.json()
if json["error"] == False:
# Get URL of result file
resultFileUrl = json["url"]
# Download result file
r = requests.get(resultFileUrl, stream=True)
if (r.status_code == 200):
with open(destinationFile, 'wb') as file:
for chunk in r:
file.write(chunk)
print(f"Result file saved as \"{destinationFile}\" file.")
else:
print(f"Request error: {response.status_code} {response.reason}")
else:
# Show service reported error
print(json["message"])
else:
print(f"Request error: {response.status_code} {response.reason}")
if __name__ == '__main__':
main()
sample.html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="" xml:lang="">
<head>
<title>TODO List</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<body>
<h1>TODO List</h1>
<ul>
<li>
Wash the car
</li>
<li>
Do the dishes
</li>
<li>
Walk the dog
</li>
<li>
Buy A4 papers
</li>
</ul>
</body>
</html>
PDF.co Web API: the Web API with a set of tools for documents manipulation, data conversion, data extraction, splitting and merging of documents. Includes image recognition, built-in OCR, barcode generation and barcode decoders to decode bar codes from scans, pictures and pdf.