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Version: Version 1.6

Get started with Python

This guide walks you through the steps to use the Pdftools SDK in a sample project with Python.

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The Python interface is implemented as a wrapper around the Pdftools SDK's C API.

Prerequisites​

The Pdftools SDK for Python requires Python 3.6 or higher.

Getting started with a sample project​

Learn how to use the Pdftools SDK using a Python sample project and convert a PDF file to an image.

Download and run the sample​

  1. Download a sample project, and then unzip the file.

  2. Navigate to the root directory of the unzipped sample project, where pdf2_img_simple.py resides.

  3. Run the sample:

    python ./pdf2_img_simple.py <input_path> <output_path>

    For example, to render the sample PDF file PdfPrimerWhitePaper.pdf to a multi-page TIFF image format, run:

    python ./pdf2_img_simple.py PdfPrimerWhitePaper.pdf PdfPrimerWhitePaper.tiff
    note

    Run python3 instead on systems where only Python 3 is installed and python is not aliased.

Integrate the SDK into your application​

Integrate and initialize the Pdftools SDK into your application by following the instructions in the next sections.

Add the SDK to your project​

  1. Download a Python sample package, and then unzip the file.

  2. Copy files from the sample package into your project's working directory. The project directory is named here <project-dir> as a placeholder example:

    1. Copy pdf_tools_sdk_ctypes.py, utils.py and streams.py into <project-dir>.

    2. Copy the include folder into <project-dir>\include.

    3. Copy the lib folder containing the native binary files into <project-dir>\lib.

    4. The project has the following structure:

      <project-dir>
      ├── pdf_tools_sdk_ctypes.py
      ├── streams.py
      ├── utils.py
      ├── include
      └── lib

  3. Import the following packages in the header of your Python code:

    from ctypes import *
    from streams import *
    from pdf_tools_sdk_ctypes import *

Initialize the SDK​

Initialize the Pdftools SDK with your license key. Replace the <PDFSDK,V1,include-your-key-here> in the following function with the value of your license key:

# Initialize library
initialize()

# Optional: Without a license key the Pdftools SDK returns watermarked results.
# Initialize the Pdftools SDK with a license key to remove the watermark.
# The Pdftools SDK returns an error if you use an invalid license key.
if sdk_initialize("<PDFSDK,1,insert-license-key-here>", None) == 0:
  print_error_message("Failed to set the license key.")
  exit(1)
tip

Without a valid license key the output files are watermarked. Get in touch with the Pdftools sales team through the Contact page to get a full license.

Uninitialize the SDK​

After processing files with the Pdftools SDK, call the Uninitialize method to unload the library correctly:

# Uninitialize library
uninitialize();
tip

Download other sample projects that show you how to implement specific use cases with the Pdftools SDK using Python. See our Code samples page. The samples include: