Sales contracts: rendered, signed, archived

HTML templates with customer-data merge. PAdES tamper-evident signatures. PDF/A-3 long-term archive. From quote-to-close in one API.

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PAdES signaturesPDF/A-3 archiveTamper-evident

Why automate contracts with pdf.xhub?

Reuse your existing HTML templates

Bring the contract templates your legal team already approved. Merge customer-specific data via Handlebars. No DSL or vendor template engine.

PAdES signatures = tamper-evident archive

Optional digital signatures bind every signed contract to its content. Long-term verifiable, court-admissible in EU jurisdictions.

PDF/A-3 = legal archive standard

Archived contracts pass legal-hold and tax-authority audits. ISO 19005-3 compliant, embed-able for hybrid PDF + structured-data archives.

How contract generation works

1. POST template + customer data

Reference your saved HTML template by ID. Pass JSON with customer fields, deal terms, signing party details.

2. We render + optionally sign

Render the merged HTML to PDF/A-3. Add PAdES signature with your account's signing certificate (or DocuSign / Yousign integration).

3. Receive immutable archive PDF

Get the signed PDF back inline. Archive in your S3 or pipe to a legal-hold system. Verifiable for years.

Built for sales-ops, legal, and revenue teams

Whether you're closing 50 deals a month or 5,000, the same endpoint serves both. Pair with PDF Form Filling for fixed legal templates, or HTML-to-PDF for branded modern contracts.

Try it in your stack

Same endpoint. Copy as cURL, call from any language.

POST template ID + deal data, receive a PAdES-signed PDF/A-3 contract.

curl -X POST https://api.pdf.xhub.io/v1/render \
  -H "Authorization: Bearer $PDFXHUB_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "source": "html",
    "templateId": "tpl_contract_v2",
    "data": { "customer": "Acme GmbH", "amount": "50000" },
    "sign": "pades-lt",
    "archive": "pdf-a3"
  }' --output contract.pdf

curl -X POST https://api.pdf.xhub.io/v1/render \
  -H "Authorization: Bearer $PDFXHUB_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "source": "html",
    "templateId": "tpl_contract_v2",
    "data": { "customer": "Acme GmbH", "amount": "50000" },
    "sign": "pades-lt",
    "archive": "pdf-a3"
  }' --output contract.pdf

Features at a glance

Template & Merge

HTML5 + CSS3 with Handlebars binding
Conditional logic (show/hide clauses)
Customer logo + brand color injection
Multi-language contracts (DE, FR, EN, IT, ES)
Custom headers, footers, signature blocks

Signing & Archive

PAdES digital signatures (PAdES-B, PAdES-T, PAdES-LT)
PDF/A-3 archive mode for long-term retention
Optional Encryption with user/owner password
DocuSign / Yousign / Skribble integration hooks
Audit trail in metadata (renderer version, hash, timestamp)

Platform

EU hosting + Schrems II compliance
Conditional clause logic via Handlebars
DocuSign / Yousign / Skribble integration hooks
Optional encryption with user/owner password
API-key scoping per legal-entity workspace
Audit-trail webhook on every render + signature

Powered by these APIs

The product endpoints behind this solution.

HTML to PDF

Learn more

PDF Form Filling

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Close your first signed contract

25 docs/month free forever. PAdES + PDF/A-3 included.

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