Tutorials

Step-by-step guides to automate document generation with PDF Munk.

#1 How to Merge Multiple PDFs in n8n (PDFMunk API Workflow)

Published: January 17, 2026

Automatically merge multiple PDF files using a clean n8n workflow powered by the PDFMunk API. Pass multiple PDF URLs (as CSV), choose your output type (URL or file), and generate one merged PDF—fully automated for document workflows.

More Use Cases

Invoice merging
Monthly & financial reports
Legal documents
Client onboarding files
HR & compliance documents
Project deliverables

#2 How to Lock PDF with Password in n8n (Step-by-Step Automation)

Published: January 15, 2026

Automatically lock PDFs with password using n8n + PDFMunk. Build a complete workflow to secure invoices, certificates, reports and more. Fully automated. No manual work.

More Use Cases

Invoices
Certificates
Reports
Legal documents
Any sensitive PDFs

#3 Creating Certificates using n8n

Published: January 10, 2026

Generate a certificate HTML template with ChatGPT, wire up an n8n workflow, and convert dynamic certificates to PDFs using PDF Munk.

More Use Cases

Invoice generator (invoices, quotes, receipts)
Automated certificates and completion badges
Monthly reports and dashboards exported to PDF
Shipping labels, packing slips, and order summaries
Contracts, proposals, and branded documents
Tickets, confirmations, and email-ready PDF attachments

Video tutorial

How to Merge Multiple PDFs in n8n (PDFMunk API Workflow)

#1 How to Merge Multiple PDFs in n8n (PDFMunk API Workflow)

#2 How to Lock PDF with Password in n8n (Step-by-Step Automation)

#3 Creating Certificates using n8n

PDF Munk: API for PDF and Document Automation

PDF Munk provides developer-friendly APIs to convert HTML, CSS, and URLs into high-quality PDF and image outputs. Teams use the platform to automate invoices, reports, receipts, statements, contracts, onboarding packets, and compliance archives. The service includes endpoints for HTML to PDF, URL to PDF, PDF to image, image to PDF, OCR for scanned files, merge, split, compress, watermark, lock, unlock, upload, and file deletion workflows.

You can start quickly with clear API documentation and test requests in the browser sandbox. Typical integrations include Node.js services, Python backends, serverless functions, scheduled jobs, and no-code automations with tools like Zapier and n8n. PDF Munk is designed for stable output, practical defaults, and production usage where reliable rendering and predictable responses are required.

Useful entry points: API Docs, Try Now, Pricing, Tutorial, and Support. For policy details, visit the Privacy Policy and Terms of Service pages.

For technical teams, PDF Munk supports practical controls such as page size selection, margin configuration, viewport tuning, print backgrounds, header and footer HTML, timeout handling, and output modes that return either downloadable files or hosted URLs. Security-focused workflows can add password protection, remove passwords when authorized, and manage temporary files through upload/delete endpoints. This makes it suitable for internal operations dashboards, customer document portals, and automated record-keeping pipelines.