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PDF Generator API

Generate PDFs, manage templates, convert HTML/URLs to PDF, and perform PDF operations like watermarking, encryption, and optimization

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Overview

This node integrates with a PDF generation API to convert HTML content or public URLs into PDF documents. It supports specifying page size, orientation, and output format (either base64-encoded JSON or binary file). This node is useful when you need to programmatically generate PDFs from dynamic HTML content or web pages without using templates.

Common scenarios:

  • Generating invoices, reports, or receipts as PDFs from custom HTML.
  • Archiving web pages or online content as PDF files.
  • Creating printable documents from styled HTML content in workflows.

Example:
You provide an HTML string containing a styled invoice, specify the filename and page layout options, and the node returns a PDF either as a base64 string for further processing or as a downloadable binary file.

Properties

Name Meaning
Filename The name of the generated PDF file (without the .pdf extension). Must contain only letters, numbers, dots, hyphens, and underscores.
Additional Options Collection of optional settings:
- Paper Size PDF page size. Options: A0, A1, A2, A3, A4 (default), Legal, Letter, Tabloid
- Orientation Page orientation. Options: Portrait (default), Landscape
- Output Format Output format of the PDF. Options: Base64 (JSON) returns a JSON response with a base64 string; File (Binary) returns binary file data suitable for download or attachment

Output

The node outputs an array of items, each containing:

  • json:

    • success: Boolean indicating if the operation succeeded.
    • filename: The full filename including .pdf extension.
    • format: The output format chosen (base64 or file).
    • If output is base64, the JSON includes the base64-encoded PDF string and possibly other metadata returned by the API.
    • If output is binary, the JSON includes success info and file metadata like file size.

  • binary (only if output format is "File (Binary)"):

    • Contains the actual PDF file data keyed by the filename, ready for downstream nodes to use as a file attachment or download.

Dependencies

  • Requires an API key credential for the external PDF Generator API service.
  • The node makes authenticated HTTP requests to the API endpoint (default base URL: https://us1.pdfgeneratorapi.com/api/v4).
  • No additional environment variables are required beyond the API credential configuration.

Troubleshooting

  • Filename validation errors: Ensure the filename is not empty and contains only allowed characters (letters, numbers, dots, hyphens, underscores).
  • HTML content length: For HTML to PDF conversion, the HTML content must be at least 10 characters long.
  • URL validation: For URL to PDF conversion, the URL must start with http:// or https://.
  • API authentication errors: Verify that the API key credential is correctly configured and has necessary permissions.
  • Output format issues: If choosing binary output, ensure downstream nodes can handle binary data.
  • General API errors: The node throws descriptive errors if the API returns invalid responses or if required parameters are missing.

Links and References

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