n8n-nodes-pdfops

n8n community node for the PDFops API — deterministic PDF operations for workflows: inspect and fill AcroForm fields, merge PDFs, and generate invoice PDFs from structured data. No headless browser, no native dependencies; PDF processing runs on the hosted API.

Works keyless out of the box (100 requests/IP/month). A free API key (250 requests/month, no card) raises the quota and unlocks usage introspection — get one at pdfops.dev/pricing.

Installation

Community nodes install by npm package name. In n8n: Settings → Community Nodes → Install → n8n-nodes-pdfops.

Self-hosted CLI alternative:

n8n community-node install n8n-nodes-pdfops

Operations

| Operation | What it does | | --- | --- | | Inspect Fields | Lists a PDF's AcroForm fields — names, types, options, current values — plus a paste-ready fill template. Use it first on unfamiliar PDFs. | | Fill Form | Fills AcroForm fields in a PDF (from a binary field) and outputs the filled PDF as binary data. | | Merge | Merges the PDFs from all incoming items (in item order) into a single output PDF. | | Generate Invoice | Turns structured JSON (from, to, items, tax, currency…) into a complete US-Letter invoice PDF — no template needed. | | Get Usage | Returns tier, quota, used, remaining, and reset date for your API key. |

Fill, merge, and invoice are deterministic: the same input produces a byte-identical PDF, so re-running a workflow never produces spurious diffs.

Credentials

Create a PDFops API credential with your API key (sent as X-API-Key). The credential is optional for every operation except Get Usage — without it, requests count against the anonymous per-IP quota.

Example: invoice on every Stripe payment

1. Stripe Trigger (payment_intent.succeeded)
2. PDFops — Generate Invoice, mapping customer + line items into the invoice JSON
3. Write Binary File / email / upload the resulting PDF

More recipes: pdfops.dev/blog.

Resources

• API documentation
• OpenAPI 3.1 spec
• n8n community nodes docs

License

MIT