PDF Processor

Quick Start

To get started:

• Select an operation from the Choose Operation dropdown
• Configure operation-specific parameters
• Send PDF path via msg.payload.pdf_path
• Receive the operation result in msg.payload

Configuration

Configuration varies by operation type.

Common Input Format

msg.payload.pdf_path (string)

Relative path of the PDF file on shared storage.

Example: "documents/report.pdf"

Common Output Format

Output format varies by operation (image paths, OCR results, table extraction results).

Available Operations

The PDF Processor block supports the following operations:

• Searchable or Scanned (is_searchable)
  • Input: msg.payload.pdf_path (string)
  • Config: line_count (number)
  • Output (msg.payload): true | false
• Split PDF to Images (split_pdf_to_images)
  • Input: msg.payload.pdf_path (string)
  • Config: dpi (number)
  • Output (msg.payload): array of generated image filenames (strings)
• PDF OCR (pdf_ocr)
  • Input: msg.payload.pdf_path (string)
  • Optional input: msg.payload.pages (array of page numbers) for page-scoped OCR modes
  • Config: ocr_type (string)
  • Config: content_type (string, only for “extract content” modes)
  • Config: width / height (numbers, only for “pages and words” modes)
  • Output (msg.payload): varies by selected ocr_type
• Table Extraction (table_extraction)
  • Input: msg.payload.pdf_path (string)
  • Config: Type of Extractor with options Algorithm - 1, Algorithm - 2, or Default Extraction
  • Output (msg.payload): extracted table artifact(s), depending on the selected extractor

Common Errors

• Invalid PDF path: PDF file doesn't exist on shared storage.
• Corrupted PDF: PDF file is corrupted or unreadable.
• Invalid page numbers: Specified page numbers are out of range.
• Service unavailable: The service is unavailable or unreachable.

Best Practices

• Convert PDFs to images for document processing workflows
• Extract specific pages to reduce processing time
• Merge PDFs to consolidate related documents
• Split large PDFs for parallel processing
• Handle password-protected PDFs appropriately
• Clean up generated files after processing