Web Reference: In this video, you’ll learn about Document Loaders and see a hands-on demo of CSVLoader, HTMLLoader, and PDFLoader. Document loaders provide a standard interface for reading data from different sources (such as Slack, Notion, or Google Drive) into LangChain’s Document format. This ensures that data can be handled consistently regardless of the source. All document loaders implement the BaseLoader interface. Jan 17, 2026 · Today, we’ll learn how to load data from CSV files, Excel spreadsheets, and other structured data using LangChain. What are LangChain Document Loaders? Think of a Document Loader as a bridge between your data and LangChain. Your data might be sitting in a file, like a CSV or Excel sheet.
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