n8n-nodes-pdf-lib-tool

Edit PDF files in n8n workflows using pdf-lib, with no external API and no system binaries.

Features

• Merge Binary PDFs: Merge multiple binary properties from each item into one PDF.
• Extract Pages: Build a new PDF from selected pages using a page range.
• Rotate Pages: Rotate all pages or selected pages by 90/180/270 degrees.
• Remove Pages: Remove selected pages from a PDF.
• Add Text: Draw text on all pages or selected pages.
• Fill Form: Fill out fillable fields in the PDF.
• Custom Code: Execute custom javascript code on the PDF.
• Pipeline: Apply multiple actions in sequence in one node.
• Runs locally: Pure JavaScript library (pdf-lib) inside your n8n instance.

Operations

1) Merge Binary PDFs

• Input: multiple binary properties in one item (example: data, attachment1, attachment2)
• Output: single merged PDF in your selected output binary property

2) Extract Pages

• Input: one source PDF binary property
• Parameter: Pages (example: 1-3,5,8-10)
• Output: new PDF containing only selected pages

3) Rotate Pages

• Input: one source PDF binary property
• Parameters:
  • Rotation: 90, 180, or 270
  • Pages To Rotate: optional range (leave empty for all pages)
• Output: rotated PDF

4) Remove Pages

• Input: one source PDF binary property
• Parameter: Pages (example: 1-3,5,8-10)
• Output: new PDF with selected pages removed

5) Add Text

• Input: one source PDF binary property
• Parameters:
  • Text: text to draw
  • X Position / Y Position: coordinates
  • Font Size: text size
  • Text Rotation: text rotation
  • Text Opacity: text opacity
  • Text Color (Hex): text color
  • Pages To Add Text: optional range (leave empty for all pages)
• Output: new PDF with text added

6) Fill Form

• Input: one source PDF binary property
• Parameters:
  • Form Fields: list of field names and values to fill
• Output: new PDF with form fields filled

7) Custom Code

• Input: one source PDF binary property
• Parameters:
  • Code: JavaScript code to manipulate the pdfDoc object using pdfLib
• Output: manipulated PDF

8) Pipeline

• Input: one source PDF binary property
• Parameters:
  • Pipeline Actions: list of actions to apply in sequence (Add Text, Remove Pages, Rotate Pages)
• Output: new PDF with all actions applied in sequence

Usage in n8n

1. Add PDF Lib node to your workflow.
2. Select Operation.
3. Set input/output binary properties.
4. Run the node.

The node returns the processed PDF in binary output and adds operation metadata under pdfLib in JSON output.

License

MIT