Pythonで画像をPDFに変換する方法

How to Convert Images to PDF in Python

1. Install the Python library for converting images to PDF files.
2. Utilize the ImageToPdfConverter method to convert an image to a PDF file.
3. Save the newly generated PDF documents using the SaveAs method.
4. Convert multiple images to a single PDF file object.
5. Run the project to see the output file.

1. What Is IronPDF?

IronPDF for Python is a versatile library that enables developers to easily generate, manipulate, and work with PDF documents in Python applications. It provides a comprehensive set of tools for creating PDFs from scratch, converting HTML and images into PDFs, and performing various operations on existing PDFs, such as merging, splitting, and adding interactive elements like forms and annotations. With its user-friendly API, IronPDF simplifies PDF generation and manipulation tasks, making it a valuable tool for developers looking to integrate PDF functionality into their Python projects, whether for generating reports, invoices, or interactive documents.

2. Creating a New PyCharm Project and Installing IronPDF

To create a new PyCharm project and install IronPDF, you'll need to follow these steps:

1. Install PyCharm: If you haven't already, download and install PyCharm from the JetBrains website (https://www.jetbrains.com/pycharm/). Make sure you have Python installed on your system as well.
2. Create a New PyCharm Project: Open PyCharm and follow these steps to create a new project:
   • Click on "File" in the top-left corner.
   • Select "New Project..."
   • Choose the location where you want to create your project and give it a name.
   • Select the Python interpreter you want to use for your project (you may need to create a virtual environment if you haven't already).

3. Install IronPDF: To install the IronPDF library, you can use the Python package manager pip. Open the terminal within PyCharm and run the following command:

   pip install ironpdf

   pip install ironpdf

   SHELL

   This command will download and install the IronPDF library and its dependencies.

3. Convert Images to PDF Files

Once the new PyCharm project folder is created and IronPDF is installed, let's convert an image to a PDF using IronPDF for Python. In the code snippet below, you will see how you can convert an image to a PDF file.

from ironpdf import ImageToPdfConverter

# Convert a single image to PDF
pdf = ImageToPdfConverter.ImageToPdf("win to pay.png")

# Save the converted PDF to a file
pdf.SaveAs("image-to-pdf.pdf")

from ironpdf import ImageToPdfConverter

# Convert a single image to PDF
pdf = ImageToPdfConverter.ImageToPdf("win to pay.png")

# Save the converted PDF to a file
pdf.SaveAs("image-to-pdf.pdf")

This code snippet uses the IronPDF library to convert an image file named "win to pay.png" into a PDF document. It first creates an ImageToPdfConverter object, passing the path to the image file as a parameter. Then, it saves the converted PDF with the filename "image-to-pdf.pdf" using the SaveAs method. Essentially, it takes an image and transforms it into a PDF file, which can be useful for various document management and sharing purposes.

4. Convert Multiple Images to a PDF File

Using IronPDF for Python, you can convert and merge all the images in a folder into a single PDF file with just a few lines of code.

The below Python script will show how to composite multiple images into a single PDF file.

from ironpdf import ImageToPdfConverter
import os

# List of image files in the directory "assets" with .jpg or .jpeg extensions
image_files = [os.path.join("assets", f) for f in os.listdir("assets") if f.lower().endswith(('.jpg', '.jpeg'))]

# Convert list of images into PDF
pdf = ImageToPdfConverter.ImageToPdf(image_files)

# Save the resulting composite PDF
pdf.SaveAs("composite.pdf")

from ironpdf import ImageToPdfConverter
import os

# List of image files in the directory "assets" with .jpg or .jpeg extensions
image_files = [os.path.join("assets", f) for f in os.listdir("assets") if f.lower().endswith(('.jpg', '.jpeg'))]

# Convert list of images into PDF
pdf = ImageToPdfConverter.ImageToPdf(image_files)

# Save the resulting composite PDF
pdf.SaveAs("composite.pdf")

This code utilizes the IronPDF library to convert a list of image files with the extensions '.jpg' or '.jpeg' from a specified directory ("assets") into a single composite PDF document. Here's a step-by-step explanation:

1. It starts by importing the necessary modules from the IronPDF library.
2. It uses a list comprehension to generate a list of image file paths from the "assets" directory that meet the criteria of having a '.jpg' or '.jpeg' file extension. This list is stored in the image_files variable.
3. An ImageToPdf object is created from the image_files list, converting all specified images into a single PDF document.
4. Finally, the composite PDF is saved as "composite.pdf" using the SaveAs method.

In summary, this code scans a directory for image files with specific extensions, compiles them into a single PDF document, and saves the resulting PDF as "composite.pdf".

5. Conclusion

This article explored the world of image-to-PDF conversion in Python, providing you with practical insights and easy-to-follow examples to help you master this essential skill. Through the example of the use of IronPDF for Python, it demonstrated how you can effortlessly convert individual images into PDF documents and even merge multiple images into a single, cohesive PDF file.

With IronPDF's user-friendly API, Python developers can streamline PDF generation, conversion, and manipulation tasks, making it a valuable resource for projects involving reports, invoices, interactive documents, and more. By following the steps outlined in this article, you can harness the power of Python and elevate your document management capabilities, all while simplifying your workflow and improving efficiency.

If you are wondering how to convert PDF files to images, check out this tutorial. Also, the source code for the example Image to PDF can be found as an example on the IronPDF website.