PDF Files

PDF (Portable Document Format) is a file format developed by Adobe for presenting documents consistently across software platforms. This module provides functionality to load and process PDF files using pdf.js.

This module provides a sophisticated PDF document loader that can:

• Load single or multiple PDF files

• Split documents by page or file

• Support base64 encoded files

• Handle file storage integration

• Process content with text splitters

• Support legacy PDF versions

• Customize metadata extraction

Inputs

Required Parameters

• PDF File: The PDF file(s) to process (.pdf extension)

• Usage: Choose between:

  • One document per page

  • One document per file

Optional Parameters

• Text Splitter: A text splitter to process the extracted content

• Use Legacy Build: Whether to use legacy PDF.js build

• Additional Metadata: JSON object with additional metadata

• Omit Metadata Keys: Comma-separated list of metadata keys to omit

Outputs

• Document: Array of document objects containing metadata and pageContent

• Text: Concatenated string from pageContent of documents

Features

• Multiple file support

• Page-level splitting

• Legacy version support

• Text extraction

• Metadata handling

• Error handling

• Memory-efficient processing

Processing Modes

Per Page Mode

• Each page becomes a document

• Preserves page numbers

• Individual page metadata

• Granular content access

Per File Mode

• Entire PDF as one document

• Combined content

• Single metadata set

• Memory efficient

Document Structure

Each document contains:

• pageContent: Extracted text content

• metadata:

  • source: Original file path

  • pdf: PDF-specific metadata

  • page: Page number (in per-page mode)

  • Additional custom metadata

File Handling

Local Files

• Direct file loading

• Base64 encoded content

• Multiple file support

Storage Integration

• File storage system support

• Organization-based storage

• Chatflow-based storage

Notes

• Uses pdf.js for extraction

• Legacy version support

• Memory-efficient processing

• Error handling for invalid files

• Support for large PDFs

• Flexible output formats

• Metadata customization

• Text encoding handling