How to Write a PDF File in Python

Updated July 22, 2023


Maintaining documents in the Portable Document Format (PDF) is preferred when it comes to preserving the integrity of text-rich and aesthetically pleasing information for document sharing, especially when using Adobe. Accessing online PDF files often requires a specific program. PDF files play a vital role in many significant digital publications today, and numerous organizations utilize them for producing professional paperwork and invoices. Developers commonly employ libraries to generate PDF documents that cater to specific client needs. The development of modern libraries has significantly simplified the process of creating PDFs. When selecting the appropriate library for a project that involves PDF creation, it is crucial to consider its building, reading, and conversion capabilities to ensure seamless integration and optimal performance. While there are other Python libraries available, in this post, we will focus on IronPDF as it is a powerful tool for editing and creating PDF files.

2.0 IronPDF for Python

Python offers programmers greater dynamism compared to other languages, enabling them to create graphical user interfaces quickly and easily. As a result, integrating the IronPDF library into Python is a straightforward process. Numerous pre-installed tools, such as PyQt, wxWidgets, Kivy, and various packages and libraries, facilitate the rapid and secure development of comprehensive GUIs.

IronPDF greatly simplifies Python web design and development. This is primarily due to the abundance of Python web development paradigms, including Django, Flask, and Pyramid. Prominent websites and online services like Reddit, Mozilla, and Spotify have successfully utilized these frameworks.

2.1 Features of IronPDF

Some key characteristics of the IronPDF are listed below.

  • PDF documents can be created using HTML, HTML5, ASP, PHP, and other sources. Additionally, image files can be converted to PDF.
  • IronPDF has the capability to open encrypted PDF files and modify existing ones.
  • Interactive PDF documents can be produced with IronPDF, allowing for actions such as splitting, combining, extracting text and images, rasterizing into images, converting to HTML, printing, filling out interactive forms, and submitting them. Splitting and combining functionalities are available as well.
  • IronPDF enables the creation of documents from a URL and supports user agents, proxies, cookies, HTTP headers, unique network login credentials, form variables, and user agents that log in using HTML login forms.
  • The IronPDF program allows for the inspection and annotation of PDF files.
  • Images can be extracted from documents using IronPDF.
  • IronPDF enables the addition of headers, footers, text, images, bookmarks, watermarks, and more to documents.
  • IronPDF allows for the separation and combination of pages within new or existing documents.
  • PDF objects can be created from documents without the need for an Acrobat viewer.
  • IronPDF can convert a CSS file into a PDF document.
  • Media-type declarations included in CSS files can be utilized to generate documents.

3.0 Configure Python Environment

3.1 Setup Python

To get started, make sure that Python is properly set up on your computer. Visit the official Python website and download the latest version of Python that corresponds to your operating system. Follow the installation instructions provided to complete the setup.

Once Python is installed, it's recommended to create a virtual environment to keep your project requirements separate. This helps maintain a clean and organized workspace for your conversion process. You can use the venv module to easily create and manage virtual environments.

3.2 New Project in PyCharm

For this tutorial, we will be using PyCharm, an IDE designed for Python development.

Select "New Project" from the menu when PyCharm begins, as illustrated in the figure below.

How to Write a PDF File in Python: Figure 1

When you select "New Project," as seen in the image below, a new window will open, allowing you to specify the project's location and Python environment.

How to Write a PDF File in Python: Figure 2

Click "Create" to start the project after choosing its environment and location. You can enter your code by opening Python files in the newly created window. This tutorial uses Python 3.9.

How to Write a PDF File in Python: Figure 3

3.3 IronPDF Library Requirement

IronPDF for Python utilizes .NET 6.0 as its primary technology. Therefore, it is essential to have the .NET 6.0 runtime installed on your computer to use IronPDF Python. Linux and Mac users may need to install Dot NET before using this Python module. You can obtain the required runtime environment by visiting the following page.

3.4 IronPDF Library Setup

To generate, modify, and open files with the ".pdf" extension, the ironpdf package must be installed. Open a terminal window and enter the following command to install the package in PyCharm:

 pip install ironpdf

The installation process of the ironpdf package is shown in the screenshot below.

How to Write a PDF File in Python: Figure 4

4.0 Create PDF Using IronPDF

Writing PDF files can be achieved in one of three ways:

  1. Writing a PDF from a URL.
  2. Writing a PDF from a string of HTML.
  3. Writing a PDF using an HTML file.

In all three methods, the import statement import ironpdf is common. This import allows you to access the IronPDF library and utilize its features within your code.

from ironpdf import *

4.1 Write a PDF from a URL

With IronPDF, creating a PDF document becomes straightforward by generating an HTML file from a URL and converting it to PDF. IronPDF includes a built-in Chrome browser, which functions as a file object to retrieve and download the HTML content. You can use the following code to automatically generate PDF files:

renderer = ChromePdfRenderer()

The URL can be converted into a document, resulting in the creation of a PDF file. The output PDF file can then be saved to a specified location. The output of the above code is shown below.

How to Write a PDF File in Python: Figure 5

4.2 Write a PDF from a string of HTML

IronPDF can indeed be utilized to convert HTML strings into PDF documents. The code provided below demonstrates an example of HTML string to document conversion. It showcases the ability to create PDF files from any HTML element.

from ironpdf import *
renderer = ChromePdfRenderer()
renderer.RenderHtmlAsPdf("<h1>Hello world!!</h1>").SaveAs("sample.pdf")

The provided sample code demonstrates how to convert HTML using the RenderHtmlAsPdf method. It allows for the conversion of any number of HTML pages into PDF strings. If desired, the resulting PDF files can be saved to a specified location using the SaveAs function.

4.3 Creating a PDF from an HTML File

IronPDF can be used to convert HTML files into PDF files. The following sample HTML code demonstrates how to create documents using IronPDF. Additionally, IronPDF allows you to generate PDF files from any HTML element. You can also utilize an HTML string to generate PDF files.


The provided sample demonstrates how to convert an HTML file using the RenderHtmlFileAsPdf method. It allows for the conversion of multiple HTML pages from the file into a string representation. By utilizing the code mentioned above, you can easily create a PDF file and save it in the desired location.

How to Write a PDF File in Python: Figure 6

To access more information and tutorials on IronPDF, please refer to the IronPDF tutorial available here.

5.0 Conclusion

The IronPDF library provides robust security measures to mitigate potential risks and ensure data security. It is compatible with all commonly used browsers and is not limited to any specific one. With just a few lines of code, programmers can quickly create and read PDF files using IronPDF. The library offers various licensing options to cater to the diverse needs of developers, including a free developer license and additional development licenses available for purchase.

The Lite bundle, priced at $749, includes a perpetual license, a 30-day money-back guarantee, one year of software maintenance, and upgrade options. There are no additional fees beyond the initial purchase, and these licenses can be used in development, staging, and production environments. Additionally, IronPDF offers free licenses with some time and redistribution restrictions. Users can evaluate the product in a real-world setting during a free trial period without any watermarks. Please visit the following link for more information on IronPDF's trial version, price, and licensing.

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