Developing Custom Document Loaders

LangChain offers many built-in document loaders for common formats like PDFs, web pages, and databases. But what if your data is unique?

Sometimes, you'll encounter:

• Proprietary file formats
• Internal APIs or data sources
• Complex data structures needing custom parsing

This is where custom document loaders shine!

To create your own loader, you'll inherit from LangChain's BaseLoader class. This is an abstract class, meaning it provides a template for what your loader needs to do.

The most important method you'll implement is load(). This method is responsible for fetching your data and transforming it into a list of Document objects.