How to Convert Microsoft Word to PDF with Python

Learn how to turn Microsoft Office documents like Word into PDFs using the Convert to PDF API Tool from pdfRest.
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Why Convert PDF to Microsoft Word?

The pdfRest Convert to PDF API Tool is a versatile service that allows users to convert various file types into PDF format. This tutorial will demonstrate how to make an API call to the Convert to PDF endpoint using Python. This functionality is particularly useful in scenarios where documents need to be standardized for distribution, archiving, or printing, such as converting invoices, reports, or other business documents into a universally accessible PDF format.

Python Code Example

from requests_toolbelt import MultipartEncoder
import requests
import json

pdf_endpoint_url = ''

mp_encoder_pdf = MultipartEncoder(
        'file': ('file_name.tif', open('/path/to/file', 'rb'), 'image/tiff'),
        'output' : 'example_pdf_out',

headers = {
    'Accept': 'application/json',
    'Content-Type': mp_encoder_pdf.content_type,
    'Api-Key': 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx'

print("Sending POST request to pdf endpoint...")
response =, data=mp_encoder_pdf, headers=headers)

print("Response status code: " + str(response.status_code))

if response.ok:
    response_json = response.json()
    print(json.dumps(response_json, indent = 2))

Reference: pdfRest API Python Sample Code

Breaking Down the Python

The code starts by importing the necessary modules: MultipartEncoder from requests_toolbelt, requests, and json.

The pdf_endpoint_url variable holds the endpoint URL to which the API call will be made.

The MultipartEncoder is used to encode the files and fields into a multipart/form-data format. The fields include:

  • 'file': A tuple containing the file name, the file object opened in binary read mode, and the MIME type of the file.
  • 'output': The desired name for the output PDF file.

The headers dictionary sets the necessary HTTP headers for the request. The 'Accept' header indicates that the response should be JSON, and the 'Content-Type' is set to the content type of the multipart data. The 'Api-Key' is where you would place your own API key provided by pdfRest.

A POST request is then sent using the method with the endpoint URL, the encoded data, and the headers. The response status code is printed out, and if the request was successful, the JSON response is printed in a formatted manner. Otherwise, the response text, which usually contains error information, is printed.

Next Steps with pdfRest

In this tutorial, we have successfully made an API call to the pdfRest Convert to PDF endpoint using Python. The code sends a file to be converted into PDF and handles the response. This example demonstrates how to work with the pdfRest API to automate document conversion processes.

To explore all of the pdfRest API Tools, you can demo them in the API Lab at For further details and documentation, visit

Note: This is an example of a multipart API call. Code samples using JSON payloads can be found at

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