Convert DWG to PDF in Python

DWG file stores 2D and 3D design data such as geometry, color, materials, and text. It is a proprietary format of AutoCAD. Because DWG files are large, they are often converted to formats like PDF for easier sharing. PDFs are widely used since they can be viewed on any platform. Converting many DWG files to PDF manually can be time‑consuming. In this post, we will show how to convert DWG to PDF in Python. Let’s begin!

The following topics are covered:

  1. Python DWG to PDF Converter – Free Download
  2. Steps to Convert DWG File to PDF
  3. Convert DWG to PDF Programmatically
  4. Export DWG to PDF with Options
  5. Export Specific Layout of DWG to PDF
  6. Convert DWG to PDF/A or PDF/B
  7. Get a Free License
  8. DWG to PDF Converter Free Online
  9. Python DWG to PDF Converter – Learning Resources

Python DWG to PDF Converter – Free Download

We use the Aspose.CAD for Python API to convert DWG files to PDF. It supports creating, editing, and manipulating DWG and several other formats.

Install the library from PyPI with:

pip install aspose-cad

How to Convert DWG File to PDF

Follow these four steps:

  1. Load a DWG drawing file.
  2. Specify CAD rasterization image options.
  3. Define PDF save options.
  4. Save the DWG as a PDF.

Convert DWG to PDF in Python

To convert a DWG to PDF:

  1. Load the input file with the Image class.
  2. Create a PdfOptions instance.
  3. Call save(), passing the output path and PdfOptions.

The code sample below demonstrates the process.

Export DWG to PDF with Options in Python

You can customize PDF output by setting save options:

  1. Load the DWG file with Image.
  2. Create a CadRasterizationOptions instance.
  3. Set page_width and page_height.
  4. Create a PdfOptions instance.
  5. Assign the rasterization options to vector_rasterization_options.
  6. Call save() to generate the PDF.

The example below shows how to set page dimensions.

Export Specific Layout of DWG to PDF in Python

To export a particular layout:

  1. Load the DWG with Image.
  2. Create CadRasterizationOptions.
  3. Set the Layouts property.
  4. Create PdfOptions.
  5. Assign rasterization options to vector_rasterization_options.
  6. Call save().

The code below illustrates exporting a specific layout.

Convert DWG to PDF/A or PDF/B

To produce PDF/A or PDF/B compliant files:

  1. Load the DWG with Image.
  2. Create CadRasterizationOptions.
  3. Create PdfOptions.
  4. Set the compliance property.
  5. Call save().

The following sample converts a DWG to PDF/A and PDF/B.

AutoCAD to PDF Converter - Get a Free License

You can get a free temporary license to try the library without evaluation limits.

DWG to PDF Converter Free Online

Convert DWG files to PDF online for free with our web app built on Aspose.CAD:

https://products.aspose.app/cad/conversion/dwg

Read more in Convert DWG to PDF Online - Free Converter.

Python DWG to PDF Converter – Learning Resources

Explore additional material on handling DWG files without AutoCAD:

Conclusion

We demonstrated how to load a DWG file and save it as a PDF using Python. You also saw how to set page size, layout, and PDF compliance. With Aspose.CAD for Python, developers can automate DWG‑to‑PDF conversion and produce customized PDFs. For quick online conversion, use our free DWG‑to‑PDF web app. If you have questions, visit our free support forum.

See Also